2022 Edexcel GCSE Psychology (1PS0) 模擬試題連答案詳解

The primacy effect occurs because words at the beginning of a list have been rehearsed more times than later words, allowing them to be transferred into long-term memory (LTM) for successful recall.

Award 1.5 marks for the correct option (B). Award 0 marks for incorrect options.

According to Jean Piaget, conservation is the understanding that quantity, length, or number is unrelated to the arrangement or appearance of objects. Children typically master conservation during the concrete operational stage (around 7 to 11 years of age).

Award 1.5 marks for the correct option (C). Award 0 marks for incorrect options.

Caspi et al. (2003) discovered that individuals who possessed two copies of the short allele (s/s) of the 5-HTT gene and had experienced stressful life events were significantly more likely to develop depression compared to those with s/l or l/l combinations.

Award 1.5 marks for the correct option (C). Award 0 marks for incorrect options.

Visual stimuli from the left visual field are processed in the right hemisphere. In split-brain patients, this information cannot cross to the left hemisphere, where the primary language centres (such as Broca's area) reside, preventing the patient from speaking the name of the object.

Award 1.5 marks for the correct option (A). Award 0 marks for incorrect options.

Piliavin et al. found that the ill victim (with a cane) received spontaneous help on 95% of the trials and was helped quicker than the drunk victim, who received spontaneous help on 50% of trials and was often perceived as responsible for his condition.

Award 1.5 marks for the correct option (B). Award 0 marks for incorrect options.

Rationalisation occurs when participants alter details of the story to make them fit their own expectations or cultural schemas (e.g., transforming an unfamiliar cultural concept like 'canoe' into a familiar one like 'boat').

Award 1.5 marks for the correct option (C). Award 0 marks for incorrect options.

Dweck's theory posits that individuals with a fixed mindset believe their intelligence and talents are static. Therefore, they view failure as proof of a lack of innate, unchangeable capability, making them highly prone to giving up.

Award 1.5 marks for the correct option (B). Award 0 marks for incorrect options.

Neurotransmitters are endogenous chemical substances released by the presynaptic neuron that cross the synaptic cleft to bind with specific receptor sites on the postsynaptic neuron, propagating or inhibiting a neural signal.

Award 1.5 marks for the correct option (B). Award 0 marks for incorrect options.

In Murdock's (1962) study, the recency effect occurs because the words at the end of the list are still held in short-term memory at the time of recall, making them easier to remember.

1.5 marks for identifying the correct option C. 0 marks for selecting options A, B, or D.

According to Milgram's agency theory, the autonomous state is when individuals direct their own behavior and take personal responsibility for the consequences of their actions.

1.5 marks for identifying the correct option B. 0 marks for selecting options A, C, or D.

Gunderson et al. (2013) found that process praise, which focuses on effort and strategies, promotes an incremental theory of intelligence (growth mindset), as it teaches children that ability can be developed through hard work.

1.5 marks for identifying the correct option C. 0 marks for selecting options A, B, or D.

Damasio et al. (1994) concluded that the damage was located in the prefrontal cortex, which explained his drastic personality changes and lack of emotional control.

1.5 marks for identifying the correct option B. 0 marks for selecting options A, C, or D.

According to Bartlett, memory is an active process rather than a literal recording. We use schemas, which are packages of information built up through experience, to reconstruct our memories. During retrieval, we reconstruct the past event by combining stored fragments with our schemas, leading to modifications such as simplification or rationalisation to fit our cultural expectations.

1 mark for stating that memory is an active process of reconstruction rather than a passive or exact recording. 1 mark for explaining the role of schemas (mental frameworks/pre-existing knowledge) in guiding this reconstruction. 1 mark for explaining how schemas cause memory changes, such as filling in gaps, rationalisation, or simplifying details to fit expectations.

Dweck suggests that the type of praise children receive shapes their mindset. If children receive 'person praise' (e.g. praising their intelligence), they develop a fixed mindset, believing ability is innate, which makes them avoid challenges. If they receive 'process praise' (e.g. praising their effort), they develop a growth mindset, believing they can improve through hard work, which increases their resilience.

1 mark for explaining that person praise (praising intelligence/talent) leads to a fixed mindset, making children fear failure or avoid challenges. 1 mark for explaining that process praise (praising effort/strategies) leads to a growth mindset. 1 mark for linking a growth mindset to positive developmental outcomes, such as increased resilience, persistence, or viewing effort as a path to improvement.

CBT aims to address both cognitive and behavioural aspects of depression. First, the therapist helps the client identify and challenge negative automatic thoughts and cognitive distortions (cognitive element). Second, the client is encouraged to change negative patterns of behaviour through techniques like behavioural activation (behavioural element). Finally, the client puts these skills into practice using homework assignments to replace negative cycles with positive ones.

1 mark for identifying the cognitive element: helping clients identify and challenge irrational or negative thoughts (e.g., negative triad). 1 mark for identifying the behavioural element: encouraging clients to engage in positive behaviours or behavioural activation (e.g., keeping diaries, homework). 1 mark for explaining how combining these elements helps the client break negative cycles and develop constructive coping mechanisms to reduce depressive symptoms.

Damasio et al. (1994) reconstructed the brain damage of Phineas Gage using modern neuroimaging and computer-modeling techniques. They took X-rays and measurements of Gage's actual skull to create a 3D virtual model. They then simulated the flight path of the iron rod through the digital skull to pinpoint the damaged areas of the brain, concluding that the damage was restricted to the prefrontal cortex (specifically the ventromedial prefrontal cortex), which explained his drastic changes in social behaviour and decision-making.

1 mark for describing the use of physical measurements/X-rays of Gage's skull combined with computer modeling/3D digital reconstruction to map the rod's path. 1 mark for identifying that the technology allowed them to locate the specific damage in the prefrontal cortex / ventromedial prefrontal cortex. 1 mark for explaining that this linked the localized damage in the frontal lobes scientifically to his observed behavioural and personality changes (e.g., lack of social inhibition).

In Milgram's variations, proximity altered obedience rates significantly. When the teacher and learner were in the same room (high proximity to the victim), obedience fell to 40% because the teacher could directly witness the consequences of their actions, increasing moral strain. When the experimenter gave instructions over the phone (low proximity to the authority figure), obedience dropped to 20.5% because the physical absence of the authority figure reduced the perceived pressure to obey.

1 mark for explaining the concept of proximity in the context of Milgram's study (distance between teacher and learner, or teacher and experimenter). 1 mark for explaining how physical closeness to the learner decreased obedience (e.g. seeing pain directly increases moral strain). 1 mark for explaining how physical distance from the experimenter decreased obedience (e.g. reduced pressure from the authority figure when they are not physically present).

According to the Multi-Store Model, environmental stimuli first enter the sensory register. If attention is paid to this stimulus, it is transferred to the short-term memory (STM). The information can be kept in STM via maintenance rehearsal (repeating it to oneself). Finally, to transfer the information to long-term memory (LTM) for permanent storage, it must undergo prolonged, elaborative rehearsal.

1 mark for explaining that information moves from the sensory register to the short-term memory (STM) when attention is paid to it. 1 mark for explaining that information can be held in STM temporarily and kept active via maintenance rehearsal. 1 mark for explaining that information is transferred from STM to long-term memory (LTM) through prolonged, active, or elaborative rehearsal.

Piaget and Inhelder (1956) used a model of three different mountains (with distinct features like snow, a cross, or a house) and sat a doll in a different position around the model. Children were asked to select from cards the picture that represented what the doll could see. Pre-operational children (under 7 years) consistently selected the picture representing their own view, showing egocentrism, while concrete operational children (7 years and older) successfully chose the picture showing the doll's perspective, showing they could de-centre.

1 mark for describing the physical setup (a 3D model of three mountains with a doll placed at a different viewpoint from the child). 1 mark for explaining the task (asking the child to select what the doll would see from its perspective, using pictures). 1 mark for explaining the developmental difference shown (pre-operational children under 7 selected their own view, showing egocentrism, while concrete operational children over 7 could select the doll's view, showing they had developed the ability to de-centre).

Genetic explanations argue that individuals can inherit a predisposition to addiction from their parents. For example, individuals with the A1 variant of the DRD2 gene have fewer dopamine receptors in their brain's reward pathway. Because they have fewer receptors, they do not experience pleasure as strongly from everyday activities, leading them to engage in addictive substances or activities to boost their dopamine levels artificially, increasing their risk of addiction.

1 mark for defining genetic predisposition as inheriting specific genes (e.g. the A1 variant of the DRD2 gene) that increase the risk/vulnerability of developing an addiction. 1 mark for explaining the biological mechanism (e.g. the DRD2 gene variant results in fewer dopamine receptors in the brain's reward pathway, leading to lower baseline feelings of pleasure). 1 mark for linking this mechanism to addictive behaviour (e.g. individuals engage in substance use or addictive behaviours to artificially stimulate dopamine release to compensate, leading to addiction).

Murdock's study supports the multi-store model of memory by showing a serial position effect, where the primacy effect indicates rehearsal of words into long-term memory (LTM) and the recency effect indicates words remaining in short-term memory (STM). This empirical distinction shows that short-term and long-term memory are separate systems.

1 mark for identifying the primacy effect and explaining its link to long-term memory (LTM) transfer through rehearsal. 1 mark for identifying the recency effect and explaining its link to short-term memory (STM) capacity/retention. 1 mark for linking these distinct effects to the conclusion that STM and LTM are separate and independent memory stores.

Bartlett proposed that memory is reconstructive. We use our schemas (existing knowledge structures) to fill in gaps when recalling a past event. This process can distort the original memory to make it fit with our existing expectations and cultural backgrounds.

1 mark for defining schemas as active mental structures/frameworks based on past experiences and expectations. 1 mark for explaining that during retrieval, we use schemas to reconstruct the memory and fill in missing information/gaps. 1 mark for explaining that this reconstruction can lead to systematic errors, rationalisation, or distortions to make the memory make sense.

According to Piaget, children in the pre-operational stage fail to conserve volume because they centrate on a single dimension (like height). Once they reach the concrete operational stage, they develop conservation because they can decentre and understand the logical rule of reversibility.

1 mark for stating that children in the pre-operational stage cannot conserve because they show centration (focusing only on one dimension, like container height). 1 mark for stating that children develop conservation of volume when they reach the concrete operational stage. 1 mark for explaining that this is due to the development of decentration (the ability to look at multiple features of a situation simultaneously) or reversibility.

Mindset theory can be applied by encouraging a growth mindset rather than a fixed mindset. When students believe effort leads to improvement, they embrace challenges and persist through difficulties, resulting in improved academic success.

1 mark for explaining that fostering a growth mindset makes students believe their intelligence/ability is malleable and can grow through effort. 1 mark for explaining that this mindset changes how they perceive failure, viewing it as a learning opportunity rather than a sign of low intelligence. 1 mark for explaining that this leads to increased persistence, effort, or the adoption of new learning strategies, improving their grades.

CBT targets both thoughts and behaviors in depression. It identifies negative thinking patterns, challenges them logically, and introduces behavioral tasks to increase engagement with rewarding activities.

1 mark for identifying that CBT helps the client identify negative or irrational thoughts (e.g., negative cognitive triad). 1 mark for explaining how the therapist and client work together to challenge or dispute these thoughts (e.g., examining evidence for and against them). 1 mark for explaining that CBT incorporates behavioral activation, which encourages the client to engage in positive, rewarding activities to improve mood.

The corpus callosum connects the left and right hemispheres. While functions are lateralised, the corpus callosum allows the transfer of information between the two halves of the brain so they can work together.

1 mark for defining hemispheric lateralisation as the specialization of functions in different hemispheres of the brain (e.g., language in the left). 1 mark for describing the corpus callosum as a bundle of nerve fibers connecting the left and right hemispheres. 1 mark for explaining that the corpus callosum allows communication/information transfer between these lateralised hemispheres, enabling integrated processing.

According to Milgram's agency theory, an individual transitions from an autonomous state (feeling responsible) to an agentic state (feeling like an agent of authority) through an agentic shift when commanded by a legitimate authority.

1 mark for explaining the autonomous state (where individuals feel personal responsibility for their actions and act on their own conscience). 1 mark for explaining that the agentic shift occurs when a person perceives someone else as a legitimate authority figure. 1 mark for explaining that in the resulting agentic state, the individual believes the authority figure is responsible for the outcomes, increasing obedience.

Bystanders perform a cognitive appraisal of the costs of helping versus the costs of not helping. High costs of helping decrease intervention, while high costs of not helping increase intervention.

1 mark for stating that bystanders calculate the balance between the costs of helping and the costs of not helping. 1 mark for explaining that a high cost of helping (e.g., physical risk, embarrassment, or time pressure) reduces the likelihood of the bystander intervening. 1 mark for explaining that a high cost of NOT helping (e.g., guilt, shame, or social blame) increases the likelihood of helping.

Schemas are active mental packages of knowledge based on prior experiences and cultural expectations. When a person hears an unfamiliar cultural story, some details will not fit into their existing schemas. When they attempt to recall the story, they use their active schemas to reconstruct the memory, leading them to alter details (rationalisation) or leave out unfamiliar elements (levelling) to make the story make sense. This results in errors and reduced memory accuracy.

Award 1 mark for defining/describing schemas as mental frameworks of knowledge (e.g., 'Schemas are packets of information based on previous experience').
Award 1 mark for explaining the conflict with unfamiliar information (e.g., 'Unfamiliar details do not fit into existing schemas').
Award 1 mark for explaining how this leads to distortion during reconstructive memory (e.g., 'People reconstruct the story by changing details to fit their own cultural schemas, reducing accuracy').
Accept: Reference to rationalisation, omission, or levelling as part of the explanation.
Reject: Descriptions of memory that do not reference schemas or reconstructive memory.

Piaget and Inhelder (1956) set up a 3D model representing three mountains of different heights and features (e.g., a cross, snow, a house). They placed a doll at different positions around the model. Children were then shown a set of pictures representing different viewpoints of the mountains and asked to choose the picture that showed what the doll could see. Children in the pre-operational stage (under 7 years) consistently chose the picture representing their own viewpoint, demonstrating their egocentric thinking.

Award 1 mark for describing the physical setup (e.g., 'A 3D model of three different mountains with a doll placed in a different position to the child').
Award 1 mark for describing the task requirements (e.g., 'The child had to select a picture or use cards to show what the doll could see from its position').
Award 1 mark for explaining how egocentrism was demonstrated (e.g., 'Younger children under 7 chose their own viewpoint rather than the doll's, showing they could not see from another perspective').

Damasio et al. (1994) took measurements of Phineas Gage's actual skull and used modern neuroimaging techniques alongside 3D computer graphics. They created a virtual 3D reconstruction of the skull to determine the exact trajectory that the iron rod had taken through his head. This allowed them to identify that the damage was restricted to the prefrontal cortex in both the left and right hemispheres, establishing a clearer link between frontal lobe damage and the dramatic personality and emotional changes Gage experienced.

Award 1 mark for identifying the use of computer technology/modeling (e.g., 'They used 3D computer imaging to reconstruct a virtual model of Gage's skull').
Award 1 mark for identifying how they mapped the physical damage (e.g., 'They used measurements of the skull to plot the precise path/trajectory of the iron rod').
Award 1 mark for explaining the conclusion linked to the brain (e.g., 'This allowed them to determine that the damage was localized to the prefrontal cortex, explaining his personality changes').

Initially, individuals typically exist in an autonomous state where they feel personally responsible for their own actions and consequences. An agentic shift occurs when they encounter a person they perceive as a legitimate authority figure, causing them to transfer this responsibility onto that figure. Once in this agentic state, the individual sees themselves merely as an instrument ('agent') carrying out another person's wishes, meaning they will obey destructive commands because they feel they are no longer personally accountable.

Award 1 mark for describing the autonomous state (e.g., 'People start in an autonomous state where they feel personally responsible for their actions').
Award 1 mark for describing the trigger for the shift (e.g., 'When they perceive someone as a legitimate authority figure, they undergo an agentic shift').
Award 1 mark for explaining why obedience occurs in the agentic state (e.g., 'In the agentic state they act as an agent and feel no personal responsibility for the consequences, making them highly obedient').

Albert Ellis proposed that depression is caused by irrational thinking. In his ABC model, 'A' stands for an Activating event (such as experiencing a negative life event, like failing a test). 'B' represents the Beliefs the individual holds about this event, which in depressed people are irrational and self-defeating (such as believing they are completely worthless). 'C' represents the emotional and behavioural Consequences (such as depression or withdrawal) that stem from holding these irrational beliefs rather than directly from the activating event itself.

Award 1 mark for explaining the Activating event (A) (e.g., 'An activating event is an external trigger or negative life event').
Award 1 mark for explaining the Beliefs (B) (e.g., 'The individual develops irrational or negative beliefs about why this event happened').
Award 1 mark for explaining the Consequences (C) (e.g., 'These irrational beliefs lead to negative consequences like clinical depression or social withdrawal').

In Experiment 2 of their study, Braun, Ellis, and Loftus (2002) exposed participants to an autobiographical advertisement for Disneyland that featured Bugs Bunny, who is actually a Warner Bros character and could not have been at Disneyland. They found that participants who saw this ad were significantly more likely to report that they had personally met and shaken hands with Bugs Bunny at Disneyland compared to those in the control group. This demonstrated that autobiographical advertising can distort memories by implanting false details about past personal experiences.

Award 1 mark for outlining the advertisement manipulation (e.g., 'Participants were shown a Disneyland advert that falsely featured the character Bugs Bunny').
Award 1 mark for describing the specific finding/result (e.g., 'Those who saw this advert were much more likely to falsely recall meeting and shaking hands with Bugs Bunny at Disneyland').
Award 1 mark for explaining what this shows about memory distortion (e.g., 'This shows that autobiographical advertising can distort memory by creating false memories of childhood events').

Model Essay:

Milgram's agency theory of obedience proposes that people operate in one of two mental states. In the autonomous state, individuals act of their own free will and take personal responsibility for their behavior. However, when faced with a legitimate authority figure, individuals undergo an 'agentic shift' to the agentic state. In this state, they perceive themselves as agents carrying out the wishes of the authority figure, shifting the responsibility of their actions onto them. This can lead to moral strain, where individuals experience psychological distress because they are acting against their own moral principles, yet feel unable to disobey due to binding factors.

One strength of the agency theory is that it is supported by empirical research. In Milgram's (1963) original obedience experiment, 65% of participants administered the maximum, potentially lethal shock of 450 volts. Many participants showed clear signs of moral strain, such as sweating, trembling, and stuttering, which supports the idea that they were experiencing conflict between their moral beliefs and their actions. When reassured by the experimenter that they would not be held personally responsible, many continued to obey, demonstrating the shift into the agentic state.

Additionally, the theory has high historical and real-world validity. It can explain real-life atrocities, such as the Holocaust or the My Lai massacre, where soldiers claimed they were 'only following orders'. This shows how ordinary people can commit horrific acts when they shift responsibility to a legitimate authority figure.

However, a significant weakness of the agency theory is that it is more descriptive than explanatory. It describes the behavior of those who obey as being in an 'agentic state', but it does not explain the cognitive processes or mechanisms of why this shift occurs. Furthermore, it cannot explain individual differences in obedience. In Milgram's study, 35% of participants resisted authority and refused to go to 450 volts, remaining in an autonomous state. The agency theory fails to explain why some people are more resistant to the agentic shift than others.

An alternative explanation is the Authoritarian Personality (a dispositional explanation), which suggests that obedience is a product of an individual's personality traits and strict upbringing, rather than their situational mental state. In conclusion, while agency theory provides a valuable framework for understanding situational pressures and the shift of responsibility, it is limited by its inability to account for individual differences and its descriptive nature.

Mark breakdown: AO1 (Knowledge and understanding) = 3 marks, AO3 (Analysis and evaluation) = 6 marks.

AO1 Points:
- Explanation of the autonomous state (acting on free will, taking responsibility) and the agentic state (acting as an agent of an authority figure, shifting responsibility).
- Explanation of the agentic shift (the transition between these states when encountering a legitimate authority figure).
- Explanation of moral strain (the distress felt when obeying commands that go against one's moral compass) and binding factors.

AO3 Points:
- Strength: Supported by Milgram's (1963) research where 65% obeyed, showing moral strain (trembling, sweating) but continuing when responsibility was assumed by the experimenter.
- Strength: High real-world application, explaining historical atrocities (e.g., Nazi soldiers) where individuals claimed they were 'only following orders'.
- Weakness: Does not explain individual differences, such as why 35% of participants in Milgram's study did not obey and remained autonomous.
- Weakness: Lacks explanatory power, acting more as a description of behavior rather than explaining the psychological causes of the shift.
- Comparison: Alternative explanations, such as dispositional factors (Authoritarian Personality), may explain obedience better.

Levels of Response:
- Level 1 (1-3 marks): Isolated elements of knowledge (AO1). Evaluation is weak, superficial, or absent (AO3). Lacks structure and coherent judgment.
- Level 2 (4-6 marks): Mostly accurate knowledge (AO1). Evaluation is present but may be unbalanced or lack development (AO3). There is some attempt at a structured argument.
- Level 3 (7-9 marks): Accurate and thorough knowledge (AO1). Evaluation is detailed, balanced, and well-developed (AO3). Leads to a logical, coherent, and well-supported judgment.

Model Essay:

Piaget's stage theory of cognitive development proposes that children progress through four universal, invariant stages of development: the sensorimotor stage (0-2 years), the pre-operational stage (2-7 years), the concrete operational stage (7-11 years), and the formal operational stage (11+ years). Piaget argued that children are active learners ('little scientists') who construct mental frameworks called schemas. They adapt these schemas through the processes of assimilation (fitting new information into existing schemas) and accommodation (modifying schemas or creating new ones in response to new information).

One major strength of Piaget's theory is its massive contribution to educational practices. By showing that children think qualitatively differently from adults at different ages, Piaget revolutionized primary education. It led to the adoption of child-centered 'discovery learning' in classrooms, where children interact with the environment to develop schemas, rather than receiving passive, rote instruction. This demonstrates high practical application.

Furthermore, Piaget's theory is supported by systematic observation and experimental research. For example, his experiments on conservation (such as the conservation of volume using liquid in different-shaped beakers) showed that younger children are dominated by their perception and cannot mentally reverse actions, which supports his distinct stages of development.

However, a significant weakness of Piaget's theory is that his research methods often underestimated children's abilities. Many of his tasks, such as the Three Mountains Task used to test egocentrism, were highly abstract, unfamiliar, and lacked human sense. When researchers like Margaret Donaldson and Martin Hughes adapted these tasks (using the 'policeman doll' task, which made social sense to children), they found that children as young as three or four could lose their egocentrism, much earlier than the 7 years Piaget suggested. Similarly, Bower showed that object permanence can exist in infants younger than 8 months when tested with less demanding tasks.

Additionally, Piaget's theory has been criticized for overestimating the formal operational stage, as many adults never fully achieve abstract, systematic hypothesis testing. He also underplayed the role of social interaction and language in cognitive development, which theorists like Vygotsky argued are fundamental drivers of learning. In conclusion, while Piaget's theory laid a vital foundation for developmental psychology and transformed education, it is limited by methodological flaws that underestimated children's cognitive capabilities and an underestimation of social-cultural influences.

Mark breakdown: AO1 (Knowledge and understanding) = 3 marks, AO3 (Analysis and evaluation) = 6 marks.

AO1 Points:
- Description of Piaget's four stages: sensorimotor, pre-operational, concrete operational, and formal operational, including key concepts like object permanence, egocentrism, and conservation.
- Explanation of the role of schemas, assimilation, accommodation, and equilibration in cognitive development.
- The view of children as active learners ('little scientists').

AO3 Points:
- Strength: High real-world application in education, moving primary schools toward child-centered, active discovery learning.
- Strength: Piaget's systematic research provided a comprehensive framework that stimulated a vast body of developmental research.
- Weakness: Methodological criticisms. Piaget's tasks (e.g., Three Mountains Task) lacked ecological validity and 'human sense,' leading him to underestimate children's abilities (as shown by Hughes' policeman doll study).
- Weakness: Underestimation of infants' abilities (e.g., object permanence develops earlier than Piaget claimed, as shown by Bower or Baillargeon).
- Weakness: Cultural bias and underplaying the role of social interaction, language, and instruction, which contrasts with Vygotsky's sociocultural theory.

Levels of Response:
- Level 1 (1-3 marks): Isolated elements of knowledge (AO1). Evaluation is weak, superficial, or absent (AO3). Lacks structure and coherent judgment.
- Level 2 (4-6 marks): Mostly accurate knowledge (AO1). Evaluation is present but may be unbalanced or lack development (AO3). There is some attempt at a structured argument.
- Level 3 (7-9 marks): Accurate and thorough knowledge (AO1). Evaluation is detailed, balanced, and well-developed (AO3). Leads to a logical, coherent, and well-supported judgment.

Step 1: Write down the ratio of those who recalled more than 15 words to those who recalled 15 or fewer words, which is \( 24 : 8 \). Step 2: Simplify this ratio by dividing both sides by their greatest common divisor, which is 8. This gives \( \frac{24}{8} : \frac{8}{8} = 3 : 1 \). Therefore, the simplified ratio is 3:1.

Award 1 mark for correct calculation showing the simplification process (e.g., dividing both numbers by 8, or setting up the initial ratio of \( 24:8 \)). Award 0.5 marks for the correct final simplified ratio of \( 3:1 \).

Step 1: Identify the fraction of participants who conformed, which is \( \frac{14}{40} \). Step 2: Convert the fraction to a percentage by multiplying by 100: \( \frac{14}{40} \times 100 = 0.35 \times 100 = 35\% \).

Award 1 mark for the correct working shown: \( \frac{14}{40} \times 100 \). Award 0.5 marks for the correct final answer: \( 35\% \) (accept 35).

Step 1: Write down the initial ratio of pro-social to individualistic behavior, which is \( 15 : 45 \). Step 2: Simplify the ratio by dividing both sides by the greatest common divisor, which is 15: \( \frac{15}{15} : \frac{45}{15} = 1 : 3 \). The simplified ratio is 1:3.

Award 1 mark for correct simplification working (e.g., writing the initial ratio as \( 15:45 \) or dividing both numbers by a common factor). Award 0.5 marks for the correct final simplified ratio of \( 1:3 \).

Step 1: Calculate the increase in sleep hours: \( 8 - 5 = 3 \) hours. Step 2: Divide the increase by the original sleep duration: \( \frac{3}{5} \). Step 3: Multiply by 100 to find the percentage increase: \( \frac{3}{5} \times 100 = 60\% \).

Award 1 mark for correct working to calculate the percentage change: \( \frac{8 - 5}{5} \times 100 \) or \( \frac{3}{5} \times 100 \). Award 0.5 marks for the correct final answer of \( 60\% \) (accept 60).

Step 1: Write down the initial ratio of males to females: \( 45 : 75 \). Step 2: Simplify by dividing both sides by the greatest common divisor, which is 15: \( \frac{45}{15} : \frac{75}{15} = 3 : 5 \). The simplified ratio is 3:5.

Award 1 mark for showing correct working or ratio setup (e.g., writing \( 45:75 \) or showing partial simplification such as \( 9:15 \)). Award 0.5 marks for the final correct simplified ratio of \( 3:5 \).

Step 1: Write the proportion of participants who improved as a fraction: \( \frac{18}{30} \). Step 2: Simplify the fraction by dividing both the numerator and the denominator by their greatest common divisor, which is 6: \( \frac{18 \div 6}{30 \div 6} = \frac{3}{5} \).

Award 1 mark for identifying the correct initial fraction of \( \frac{18}{30} \) or showing the division steps to simplify. Award 0.5 marks for the correct simplified fraction of \( \frac{3}{5} \).

Step 1: Put the data in ascending order:
8, 11, 12, 13, 14, 15, 16, 19

Step 2: Find the middle value. Since there is an even number of values (8), find the mean of the two middle values (the 4th and 5th values):
\(\frac{13 + 14}{2} = 13.5\)

One mark for ordering the data correctly or showing the calculation to find the mean of the two middle values: \(\frac{13 + 14}{2}\) (or equivalent).
One mark for the correct answer: 13.5.

1. The trend from bottom-left to top-right on a scatter diagram indicates a positive correlation.
2. A positive correlation means that as one variable increases, the other variable also increases. In this context, as the number of revision hours increases, the exam scores also increase.

One mark for identifying 'positive correlation'.
One mark for explaining the relationship (e.g., 'as revision hours increase, exam scores also increase' or 'students who revised more tended to get higher exam scores').

Step 1: Set up the initial ratio of violent to non-violent:
\(45:12\)

Step 2: Simplify the ratio by finding the greatest common divisor, which is 3:
\(\frac{45}{3} : \frac{12}{3} = 15:4\)

One mark for showing the correct initial ratio of 45:12 (or equivalent working, such as dividing both parts of the ratio by the same number).
One mark for the correct simplified ratio: 15:4 (accept 3.75:1).

1. A bar chart is the most appropriate graph to display this data.
2. This is because the independent variable (noise levels: low, medium, high) consists of nominal/discrete categories, and bar charts are designed to compare separate, distinct categories of data rather than continuous data.

One mark for identifying a 'bar chart' / 'bar graph' (do not accept histogram).
One mark for explaining that the data/independent variable consists of discrete categories or nominal data (or that the noise conditions are separate/not continuous).

Dr Patel should use standardised instructions so that every participant receives the exact same guidance on how to complete the reading task. This controls situational variables, ensuring that any change in concentration scores is due to the background noise (the independent variable) and not because some participants had the task explained differently.

1 mark for identifying a reason (e.g., to control situational variables/ensure consistency). 1 mark for explaining this in the context of Dr Patel's study (e.g., ensuring reading performance is affected by noise levels rather than differences in how the task was explained).

An advantage of closed questions is that they produce quantitative (numerical) data. This makes it easier for the researcher to count responses, calculate averages, and directly compare the exam stress levels between different groups of students.

1 mark for identifying an advantage of closed questions (e.g., easier to analyse / produces quantitative data). 1 mark for explaining this advantage in the context of the exam stress study (e.g., allowing direct comparison of stress levels between different students).

A strength of random sampling is that every student in the school of 500 has an equal chance of being selected, which reduces researcher bias. This makes the sample of 20 students more likely to be representative of the wider school population, allowing the psychologist to generalise the findings about sleep patterns more confidently.

1 mark for identifying a strength of random sampling (e.g., less researcher bias / more representative). 1 mark for explaining this strength in relation to the school sleep study (e.g., because all 500 students have an equal chance of selection, the sleep patterns of the 20 selected students are more likely to represent the whole school).

Debriefing is important because the participants were deceived about the true nature of the study (thinking it was a visual perception task when it was actually about conformity). Debriefing allows the researchers to explain the true aim, answer any questions, and ensure the participants leave the study in the same psychological state as they entered, without feeling embarrassed or distressed.

1 mark for identifying why debriefing is needed (e.g., to reveal the true aim of the research / address deception). 1 mark for explaining this in relation to the conformity study (e.g., ensuring participants do not feel distressed or foolish once they realise they were lied to about the visual task).

### Indicative Content

#### AO1 (Knowledge & Understanding)
* Naturalistic observations involve watching and recording behavior in the environment where it would normally occur, without manipulating any variables.
* Non-participant observation occurs when the researcher remains separate from the group being observed and does not actively interact with the participants.
* These methods aim to capture genuine, authentic behavior to increase ecological validity, but can suffer from observer bias and a lack of control over extraneous variables.

#### AO2 (Application to the Scenario)
* The observation is naturalistic because Dr. Evans is observing students in their normal Year 10 classroom during their regular science lessons, without changing their seating arrangements or teaching style.
* It is a non-participant observation because Dr. Evans sits quietly at the back of the room and records behaviors using a tally sheet, rather than joining in the lesson or interacting with the students.
* She is using operationalized categories of focus, defining 'on-task' behavior (e.g., note-taking, looking at the teacher) versus 'off-task' behavior (e.g., window-gazing, talking) to collect quantitative data across front, middle, and back rows.
* Since the students knew she was there but were misled about the true focus ('classroom dynamics'), this represents a disclosed (overt) observation with a degree of deception.

#### AO3 (Evaluation/Analysis/Judgment)
* **Strength (Ecological Validity):** Because the study takes place in the students' real classroom during regular lessons, the findings about student focus are highly generalizable to everyday school settings.
* **Limitation (Hawthorne Effect / Demand Characteristics):** Although she used a cover story ('classroom dynamics'), the overt presence of Dr. Evans at the back of the room for two weeks may still cause students to alter their behavior (e.g., trying to appear more on-task), reducing the validity of the data.
* **Strength (Objectivity of Non-Participant role):** By remaining separate from the class, Dr. Evans can remain objective and focus entirely on tallying behaviors accurately, which would be impossible if she were trying to teach or assist in the class.
* **Limitation (Lack of Control / Extraneous Variables):** Dr. Evans cannot control other factors that might affect focus on any given day, such as the difficulty of the science topic being taught, individual student fatigue, or outside distractions, which might confound the relationship between seating position and focus.
* **Ethical Considerations:** Observing students overtly with a mild cover story is generally ethically acceptable as it avoids severe deception while protecting the validity of the study, though informed consent from parents/school would be necessary.

### Conclusion
Overall, naturalistic, non-participant observation is a highly appropriate method for Dr. Evans's study because it captures authentic classroom behaviors that would be impossible to replicate in an artificial lab setting. However, to improve the validity of her conclusions, she should ensure high inter-rater reliability by having a second observer use the same tally sheet to record behaviors simultaneously.

### Mark Grid

* **AO1 (4 marks):** Demonstrate knowledge and understanding of naturalistic and non-participant observation methods.
* **AO2 (4 marks):** Apply knowledge and understanding of naturalistic and non-participant observation methods to the classroom scenario.
* **AO3 (4 marks):** Evaluate the strengths and limitations of the observational method in this context, making a logical and reasoned judgment.

### Levels of Response

* **Level 1 (1–3 marks):**
* Demonstrates isolated elements of knowledge and understanding. (AO1)
* Provides a weak or superficial application to the scenario. (AO2)
* Evaluation is limited, generic, and lacks structure. No clear conclusion is reached. (AO3)

* **Level 2 (4–6 marks):**
* Demonstrates some accurate knowledge and understanding of the methods. (AO1)
* Applies knowledge to the scenario in a limited or inconsistent way. (AO2)
* Offers some evaluation of strengths and/or limitations, but it may be unbalanced or lack development. A basic conclusion is attempted. (AO3)

* **Level 3 (7–9 marks):**
* Demonstrates mostly accurate and detailed knowledge and understanding. (AO1)
* Applies knowledge to the scenario effectively throughout most of the response. (AO2)
* Provides a developed evaluation of both strengths and limitations, showing clear logical structure and leading to a reasoned conclusion. (AO3)

* **Level 4 (10–12 marks):**
* Demonstrates precise, comprehensive, and well-structured knowledge and understanding of naturalistic non-participant observations. (AO1)
* Sustains highly relevant and accurate application to the classroom scenario. (AO2)
* Provides a fully balanced, detailed, and critical evaluation of strengths and limitations, leading to a logical, well-supported, and nuanced conclusion. (AO3)

Recidivism refers to the tendency of a convicted criminal to reoffend or repeat an undesirable behaviour after they have already received punishment, intervention, or rehabilitation.

1 mark for the correct option (B).
0 marks for any incorrect option.

Height in the plane is a monocular depth cue where objects that are positioned higher up in our visual field are perceived as being further away from the observer.

1 mark for the correct option (B).
0 marks for any incorrect option.

Freud distinguished between the manifest content (the literal imagery of the dream) and the latent content (the hidden psychological meaning of the dream, which represents unconscious wishes).

1 mark for the correct option (C).
0 marks for any incorrect option.

The Sapir-Whorf hypothesis proposes linguistic relativism/determinism, which states that language determines or heavily influences the way we think and perceive the world.

1 mark for the correct option (C).
0 marks for any incorrect option.

Gregory's theory states that perception is active and involves constructing a hypothesis about what is being seen using past knowledge and schemas. Visual illusions occur because the brain misapplies these top-down rules or depth cues (such as linear perspective) to 2D drawings. Consequently, the brain makes a mistaken hypothesis, leading to a misinterpretation of size or distance, such as perceiving the lines in the Müller-Lyer illusion as different lengths.

Award 1 mark for identifying that perception involves making hypotheses based on past knowledge. Award 1 mark for explaining that illusions occur when depth cues or schemas are misapplied. Award 1 mark for explaining the outcome (mistaken hypothesis or misinterpretation of size/distance).

A strength of Gibson's direct theory is its high ecological validity. This is because Gibson developed his theory based on how military pilots actually navigated real-world environments, rather than using artificial laboratory experiments. This means the theory is highly applicable and generalizable to how humans perceive depth and movement in their everyday lives.

Award 1 mark for identifying a strength (such as high ecological validity or practical applications). Award 1 mark for linking this to its development in real-world settings (such as WWII pilots or direct visual environments). Award 1 mark for explaining why this is beneficial (such as being highly generalizable to everyday perception rather than artificial lab tasks).

Perceptual set is a bias or readiness to perceive something in a particular way based on expectations or context. Showing participants kitchen items primes a food-related schema, creating an expectation to see kitchen-related objects. Therefore, the researcher can predict that these participants are much more likely to perceive the ambiguous shape as a loaf of bread rather than a mailbox.

Award 1 mark for defining/explaining perceptual set as an expectation-based bias. Award 1 mark for applying this to the context (kitchen items prime a kitchen/food schema). Award 1 mark for predicting the specific outcome (perceiving the shape as a loaf of bread).

Height in plane is a monocular depth cue that relies on where an object is positioned relative to the horizon. In a visual scene, objects that are placed higher up in the field of view are interpreted as being further away. This is because the brain understands that distant objects naturally appear closer to the horizon line, which is situated higher up in our field of vision.

Award 1 mark for defining/identifying height in plane as a monocular cue related to position. Award 1 mark for explaining that higher placement indicates greater distance. Award 1 mark for explaining the link to the horizon line (objects closer to the horizon are perceived as further away).

Freud proposed that the primary purpose of dreaming is wish fulfillment, allowing us to act out unconscious desires and impulses that are unacceptable in waking life. He argued that dreams have latent content, which is the hidden, real meaning of the dream. To protect the sleeper from waking up due to anxiety, this latent content is transformed through dreamwork into manifest content, which is the symbolic and disguised storyline we remember.

Award 1 mark for identifying the purpose of dreams as wish fulfillment or unconscious desire representation. Award 1 mark for explaining latent content as the hidden, real psychological meaning. Award 1 mark for explaining manifest content/dreamwork as the symbolic disguise that prevents anxiety.

According to the activation-synthesis theory, during REM sleep, random neurological activity is generated in the brainstem (pons), sending electrical impulses to the cerebral cortex. The cerebral cortex then attempts to synthesize (make sense of) these random, meaningless signals by turning them into a narrative story. Because these biological signals are entirely random and not driven by coherent real-world experiences, the resulting dream story created by the brain is often bizarre and disorganized.

Award 1 mark for identifying that random neural signals/impulses are generated in the brainstem (activation phase). Award 1 mark for explaining that the cerebral cortex tries to interpret and synthesize these signals into a story (synthesis phase). Award 1 mark for linking the random/illogical nature of the initial signals to the bizarre/disorganized nature of the dream.

CBT-i is a structured therapy that aims to change negative thought patterns and behaviors that contribute to insomnia. The cognitive aspect helps patients identify and challenge dysfunctional beliefs about sleep, such as catastrophizing thoughts about the effects of insomnia. The behavioral aspect introduces techniques like stimulus control or sleep restriction, which rebuild a strong association between the bed and sleep, thereby helping the patient fall asleep more easily.

Award 1 mark for explaining the general aim (changing negative thoughts and behaviors to improve sleep). Award 1 mark for explaining a cognitive technique (challenging negative/anxious thoughts about sleep). Award 1 mark for explaining a behavioral technique (such as stimulus control, keeping a regular routine, or association of bed with sleep).

An exogenous zeitgeber is an external environmental cue, such as light, that helps to reset and synchronize our biological circadian rhythms. When Saffron is exposed to bright natural daylight during the day when she needs to sleep, this light is detected by her eyes and signals the suprachiasmatic nucleus (SCN). This SCN activation suppresses the release of melatonin from the pineal gland, signaling her body to stay alert and making it very difficult for her to fall asleep during the day.

Award 1 mark for defining/identifying light as an exogenous zeitgeber that resets circadian rhythms. Award 1 mark for applying to Saffron's situation (daylight exposure when she is trying to sleep or working shifts). Award 1 mark for explaining the biological consequence (suppression of melatonin or stimulation of the SCN, which keeps her awake).

A token economy programme is a behaviour modification technique based on the principles of operant conditioning. It operates through positive reinforcement to encourage prosocial behaviours in a prison setting: 1. Prison staff identify desirable target behaviours (such as cooperation or cleanliness) and immediately reward offenders with tokens (which act as secondary reinforcers) when these behaviours are demonstrated. 2. These tokens can subsequently be exchanged by the offender for meaningful rewards (primary reinforcers), such as television privileges, extra visits, or tuck shop items. 3. This systematic reinforcement strengthens the association between the desirable behaviour and positive outcomes, thereby increasing the likelihood that the prosocial behaviour will be repeated.

Award 1 mark for identifying that desirable behaviours are rewarded immediately with tokens (secondary reinforcers). Award 1 mark for explaining that these tokens are later exchanged for primary reinforcers or desirable privileges. Award 1 mark for linking this to operant conditioning/positive reinforcement to show how it increases the occurrence of the desired behaviour.

Expectation is a cognitive factor that creates a perceptual set, which is a readiness to perceive stimuli in a particular way: 1. Prior experiences or environmental context prime an individual, creating an anticipation of what they are about to see. 2. This expectation directs top-down processing, meaning the brain actively interprets incoming sensory information from the ambiguous image to align with these pre-existing mental concepts. 3. For instance, as demonstrated in Bruner and Minturn's study, being exposed to letters primes a person to perceive an ambiguous middle figure as a 'B', whereas being exposed to numbers primes them to perceive the identical shape as a '13'.

Award 1 mark for defining expectation or how it creates a perceptual set/cognitive bias. Award 1 mark for explaining the process of top-down processing or interpreting sensory data to fit the context. Award 1 mark for using a clear example (such as the B/13 ambiguous figure) to illustrate how the perception of the ambiguous image is altered.

An outstanding response will demonstrate comprehensive knowledge of token economy programmes (AO1) and provide a balanced, detailed evaluation of their effectiveness and limitations (AO3).

**Knowledge (AO1):**
- Token economies are based on operant conditioning, specifically behaviour modification and reinforcement theory.
- Prisoners receive tokens (secondary reinforcers) immediately after demonstrating desirable target behaviours (e.g., following instructions, non-aggression, keeping cells tidy).
- These tokens can later be exchanged for primary reinforcers (e.g., extra free time, television privileges, visits, sweets).
- Positive reinforcement increases the likelihood of the desirable behaviour being repeated.

**Evaluation (AO3):**
- **Strength (Ease of use):** They are relatively simple and cheap to administer by prison staff without needing highly specialized psychological training, unlike cognitive therapies.
- **Strength (Immediate impact):** They are highly effective at managing and improving behaviour within the prison setting itself, leading to a safer environment for staff and inmates.
- **Limitation (Lack of generalization):** Once offenders leave prison, the token economy is no longer in place, leading to extinction of the desired behaviour. This limits its effectiveness in preventing long-term recidivism (reoffending) in the real world.
- **Limitation (Ethical issues):** Withholding basic privileges (like family visits or leisure time) to use as rewards is criticized by some as a violation of basic human rights and manipulative.
- **Limitation (Treats symptoms, not causes):** Unlike cognitive-behavioural therapies (such as anger management), token economies do not address the underlying cognitive, emotional, or social causes of criminal behaviour, making them a temporary fix rather than a permanent cure.

**Mark Scheme (9 Marks):**
- **AO1 (3 marks):** Demonstrates accurate and thorough knowledge and understanding of token economy programmes (operant conditioning, tokens as secondary reinforcers, exchange for primary reinforcers).
- **AO3 (6 marks):** Offers a detailed, balanced evaluation of the effectiveness, ethical implications, and limitations of token economies, leading to a reasoned conclusion.

**Levels of Performance:**
- **Level 1 (1-3 marks):** Demonstrates isolated elements of knowledge. Evaluation is sparse, superficial, and lacks structure.
- **Level 2 (4-6 marks):** Demonstrates mostly accurate knowledge. Evaluation is present but may lack balance or focus on only one side (e.g., only strengths). Some logical structure.
- **Level 3 (7-9 marks):** Demonstrates accurate and thorough knowledge. Evaluation is highly detailed, balanced (strengths vs. limitations), and leads to a logical and reasoned conclusion.

An outstanding response will show balanced knowledge of both theories (AO1), apply them directly to Freya's dream (AO2), and evaluate/compare the two explanations (AO3).

**Knowledge (AO1):**
- **Freud's Psychoanalytic Theory:** Dreams are an expression of unconscious desires and anxieties. They consist of manifest content (the literal story remembered) and latent content (the hidden symbolic meaning), which is disguised by dreamwork to prevent the dreamer from waking up.
- **Activation-Synthesis Theory (Hobson & McCarley):** Dreaming is a purely biological process. Random electrical signals (activation) originate in the pons during REM sleep. The cerebral cortex attempts to make sense of these random inputs by synthesizing them into a narrative story (synthesis).

**Application (AO2):**
- **Freud:** Freya's manifest content is flying with paper wings and falling. The latent content is her anxiety about her exams. The paper wings represent exam papers/schoolwork, and falling represents her fear of failing or losing control under academic pressure.
- **Activation-Synthesis:** The physical sensation of flying or falling relates to the activation of her vestibular system or motor cortex during REM sleep, interpreted by the brain despite REM muscle paralysis. The school setting is synthesized because exam stress makes school-related memories highly active in her cortex, prompting the brain to weave them into the narrative.

**Evaluation (AO3):**
- **Scientific Credibility:** Activation-synthesis is highly scientific, relying on objective physiological evidence (EEGs, brain scans) compared to Freud’s highly subjective theory, which cannot be scientifically tested or falsified.
- **Meaning vs. Randomness:** Freud's theory explains why Freya's dream is so personally meaningful and tied to her real-life stress. In contrast, activation-synthesis is criticized as reductionist because it treats dreams as mere biological by-products, failing to fully account for why dreams present coherent narratives linked to personal concerns.
- **Conclusion:** While activation-synthesis provides a strong biological explanation for the physical sensations in Freya's dream, Freud's theory offers a richer explanation of its personal emotional significance.

**Mark Scheme (9 Marks):**
- **AO1 (3 marks):** Accurate knowledge of Freud’s psychoanalytic theory (manifest/latent content) and Hobson and McCarley’s activation-synthesis theory.
- **AO2 (3 marks):** Clear application of both theories to Freya's dream elements (paper wings, falling, exam stress, vestibular activation, cortex synthesis).
- **AO3 (3 marks):** Evaluation and comparison of the two theories (e.g., scientific validity, subjectivity vs. objectivity, reductionism vs. emotional meaning).

**Levels of Performance:**
- **Level 1 (1-3 marks):** Isolated knowledge points with little to no application or evaluation. Unstructured.
- **Level 2 (4-6 marks):** Good knowledge of both theories. Attempted application to Freya and some evaluative comments, but lacks balance or depth.
- **Level 3 (7-9 marks):** Detailed and thorough knowledge. Direct and accurate application to Freya's dream. Well-balanced evaluation comparing the scientific and psychological merits of both theories with a clear conclusion.