2023 Edexcel GCSE Psychology (1PS0) 模擬試題連答案詳解

According to Piaget's theory of cognitive development, egocentrism refers to a child's inability to see a situation from another person's point of view, which is characteristic of the pre-operational stage.

1 mark for the correct answer (B). 0 marks for any other answer.

Under the Multi-store Model of Memory, information in the short-term memory (STM) store lasts for about 18 to 30 seconds before it decays, unless it is actively rehearsed.

1 mark for the correct answer (B). 0 marks for any other answer.

Interference occurs when two memories compete or conflict with each other, leading to one memory disrupting, blocking, or confusing the retrieval of another, especially when the memories are highly similar. One type of interference is proactive interference (where old memories disrupt the recall of new ones) or retroactive interference (where new memories disrupt the recall of old ones).

Award 1 mark for a clear definition of interference (e.g., 'when memories conflict with each other, causing forgetting or disruption of recall'). Award 0.5 marks for correctly naming either 'proactive interference' or 'retroactive interference'.

Piaget's pre-operational stage occurs from approximately 2 to 7 years of age. During this stage, children display several cognitive limitations, including egocentrism (the inability to see a situation from another person's point of view) and a lack of conservation (the understanding that quantity does not change even when the appearance changes).

Award 1 mark for correctly stating the age range: 2 to 7 years (accept '2-7 years old'). Award 0.5 marks for identifying one correct cognitive limitation: egocentrism, lack of conservation, animism, centration, or irreversibility.

Unipolar depression is a mental health disorder characterized by persistent low mood, sadness, or lack of interest in daily activities, without the high, manic phases seen in bipolar disorder. According to the DSM-5, a diagnosis requires symptoms such as depressed mood most of the day, markedly diminished interest or pleasure in all or almost all activities, insomnia or hypersomnia, or significant weight loss/gain.

Award 1 mark for defining unipolar depression (must mention persistent low mood/sadness and lack of manic/high episodes to distinguish from bipolar). Award 0.5 marks for naming one correct DSM-5 symptom (e.g., loss of interest/anhedonia, depressed mood, fatigue, feelings of worthlessness, sleep disturbance, changes in appetite).

Deindividuation is a psychological state where an individual loses their sense of personal identity, self-awareness, and personal responsibility, often because they are part of a large crowd or group. This can lead to collective behavior that goes against social norms. Factors that increase deindividuation include anonymity (e.g., wearing masks or uniforms) and being part of a very large group.

Award 1 mark for defining deindividuation (must refer to loss of individual identity/self-awareness/personal responsibility within a group or crowd). Award 0.5 marks for naming one factor (e.g., wearing a uniform, wearing masks/disguises, anonymity, being in a large group, altered state of consciousness).

The temporal lobe is primarily responsible for processing auditory information (hearing) and memory encoding. Located within the left temporal lobe is Wernicke's area, which is specifically responsible for the comprehension and understanding of spoken language.

Award 1 mark for identifying the primary function (e.g., hearing, auditory processing, auditory perception). Award 0.5 marks for identifying Wernicke's area (accept 'Wernicke's').

Retrograde amnesia is a type of memory loss where a person cannot recall memories or events that occurred prior to the onset of the amnesia or brain damage. The hippocampus is the critical brain structure responsible for memory consolidation, which is the process of forming new long-term memories.

Award 1 mark for defining retrograde amnesia (must state that it is the loss of memory for events *before* the injury/trauma). Award 0.5 marks for naming the hippocampus (accept 'hippocampal region').

Locus of control is a personality dimension referring to the extent to which individuals believe they can control events affecting them (internally) versus believing external forces control them (externally). Individuals with an internal locus of control are more likely to resist social influence because they feel personal responsibility for their actions.

Award 1 mark for defining locus of control (must mention belief about control over life events/outcomes). Award 0.5 marks for identifying 'internal' (or 'internal locus of control').

According to Carol Dweck's mindset theory, a fixed mindset is the belief that basic qualities, such as intelligence, talent, and ability, are fixed traits that cannot be developed or changed. Children with a fixed mindset tend to view failure as a reflection of their permanent lack of ability, leading them to give up easily, avoid future challenges, or feel discouraged.

Award 1 mark for defining a fixed mindset (must mention the belief that intelligence/abilities/talents are innate, set, or cannot be changed/developed). Award 0.5 marks for identifying a correct response to failure (e.g., giving up quickly, avoiding challenges, interpreting failure as a lack of talent/intelligence, lack of resilience).

To define interference as an explanation of forgetting: 1) State that it occurs when one memory conflicts with, disrupts, or confuses the retrieval of another memory (1 mark). 2) Mention that this is especially common when the memories are highly similar, or distinguish between proactive and retroactive interference (0.5 marks).

1 mark for a basic definition of interference (e.g., memories disrupting or blocking each other). 0.5 marks for an elaboration (e.g., stating similarity makes it more likely, or defining proactive/retroactive interference).

According to Carol Dweck: 1) A fixed mindset is the belief that intelligence, talent, and abilities are fixed, predetermined, or unchangeable traits (1 mark). 2) People with this mindset believe that success is due to natural ability rather than effort, or they avoid challenges to avoid failure (0.5 marks).

1 mark for the core definition (the belief that intelligence/abilities are fixed/innate and cannot be changed). 0.5 marks for describing a characteristic behaviour/attitude associated with it (e.g., avoiding challenges, giving up easily, or believing effort is pointless).

In social influence, deindividuation occurs when: 1) An individual loses their personal identity, self-awareness, and sense of personal responsibility (1 mark). 2) This typically happens when they are part of a large crowd, anonymous group, or wearing a uniform/disguise (0.5 marks).

1 mark for defining deindividuation as the loss of individual identity/responsibility/self-awareness. 0.5 marks for explaining the context that triggers it (e.g., being in a crowd, group anonymity, or wearing uniforms).

In the context of addiction: 1) Dependence is the state where an individual feels they must continue taking a substance or engaging in a behavior to function normally or avoid discomfort (1 mark). 2) This can be physical (characterized by withdrawal symptoms/tolerance) or psychological (an intense emotional craving) (0.5 marks).

1 mark for defining dependence as relying on a substance/behaviour to function normally. 0.5 marks for distinguishing between physical and psychological dependence or mentioning withdrawal/tolerance.

Leo is using a memory strategy known as chunking. According to the Multi-Store Model, short-term memory has a limited capacity of between 5 and 9 items (7 +/- 2). By grouping the 10 separate items into 3 categories (dairy, fruit, bakery), Leo reduces the cognitive load to just 3 'chunks' of information. This easily fits within his short-term memory capacity and makes recall much more successful.

1 mark for identifying chunking or categoric clustering. 1.5 marks for explaining how this fits within short-term memory capacity limits (such as stating that short-term memory capacity is 7 +/- 2 items, and grouping reduces 10 items to 3 manageable chunks, preventing memory overload).

Amara exhibits normative social influence, which often leads to compliance. She conformed because she felt social pressure to match the group's behavior, even though she privately disagreed. Standing up and applauding allowed her to avoid the awkwardness of being the only one sitting down, fulfilling her need to be accepted by the crowd.

1 mark for identifying normative social influence or compliance. 1.5 marks for applying this to the scenario, explaining that Amara conformed to avoid disapproval, fit in with the majority, or avoid standing out as different, even though she privately disagreed with the crowd. Reject: Informational social influence.

Toby is demonstrating egocentrism, which is the inability to see a physical situation from another person's perspective. In Piaget's theory of cognitive development, this characteristic is typical of a child in the pre-operational stage of development, which spans from ages 2 to 7 years.

1 mark for identifying the concept as egocentrism. 1.5 marks for identifying the pre-operational stage and explaining that children in this stage are cognitively unable to take another person's perspective.

Marcus has damaged Wernicke's area, which is located in the temporal lobe of the dominant hemisphere. This area is crucial for understanding spoken language and formulating meaningful speech. Because of the damage, Marcus can still physically produce speech, but he cannot comprehend language or organize his own thoughts into grammatically meaningful sequences, causing fluent but meaningless speech.

1 mark for identifying Wernicke's area. 1.5 marks for explaining that Wernicke's area is responsible for language comprehension and processing, and damage to it means he can produce fluent words but cannot process language meaning, resulting in fluent but meaningless sentences. Reject: Broca's area.

The cognitive symptom shown by Chloe is her irrational, negative thought: 'Everyone will laugh at me because I am incompetent.' A CBT therapist would help Chloe challenge this belief using cognitive restructuring. The therapist would ask Chloe to examine objective evidence for and against this belief (such as past successful speaking experiences) and replace it with a more realistic and balanced thought.

1 mark for identifying the cognitive symptom (e.g., her irrational belief that everyone will laugh at her or that she is incompetent). 1.5 marks for explaining how CBT would challenge this, such as using thought diaries, logical disputing, examining evidence, or testing the belief via behavioral experiments.

Bilal is using procedural memory, which is the long-term memory store for motor skills, physical actions, and habits. Procedural memories are implicit (non-declarative), meaning they are learned and executed automatically without conscious control. Because they are not stored in a verbal format, it is extremely difficult to consciously recall and describe the exact physiological steps in words.

1 mark for identifying procedural memory. 1.5 marks for explaining that procedural memory is implicit or non-declarative, meaning it is stored as motor actions rather than verbal facts, which makes it difficult to retrieve into conscious awareness to describe verbally.

The school is utilizing social norms (normative social influence). By highlighting that 90% of students recycle, the posters establish recycling as the descriptive social norm (the expected, acceptable behavior of the group). Students conform to this norm because they have a desire to fit in with their peers and be a 'typical' member of the school group, leading them to change their behavior to align with the positive social expectation.

1 mark for identifying social norms or normative social influence. 1.5 marks for explaining that the poster communicates what the majority does (the norm), and students conform to this norm to fit in with their peers or avoid being a social outlier, which drives the behavioral change.

Jasmine is demonstrating a lack of conservation of number. She is focused only on the visual appearance (centration), believing that the longer row must contain more sweets. A child who has developed the ability to conserve (which occurs in the concrete operational stage) would correctly state that both rows still have the same number of sweets, understanding that altering the physical layout or spacing of the objects does not change their actual quantity.

1 mark for identifying lack of conservation (or conservation of number or centration). 1.5 marks for explaining that a conserving child would recognize that the quantity of sweets remains equal/constant because no sweets were added or subtracted, showing they can look past superficial changes in physical appearance.

Chloe is in the pre-operational stage of cognitive development (which typically spans ages 2 to 7). During this stage, children struggle with conservation tasks. They cannot understand that volume remains unchanged when poured into a different-shaped container. Furthermore, Chloe is showing centration, focusing solely on the visual feature of height, which leads her to believe the taller glass holds more juice.

Award 1 mark for identifying the pre-operational stage.
Award 1 mark for explaining that she lacks conservation / cannot conserve volume.
Award 1 mark for applying the concept of centration (focusing only on one dimension, height) to the scenario.

George is using the memory technique of chunking. The short-term memory (STM) has a limited capacity of between 5 and 9 items (or \(7 \pm 2\) items). By grouping the 10 separate numbers into three distinct 'chunks' ('01632', '960', and '572'), George decreases the cognitive load, allowing the information to fit comfortably within his STM capacity.

Award 1 mark for identifying the concept of chunking/grouping individual items into larger, meaningful units.
Award 1 mark for explaining that this fits within the limited capacity of short-term memory (normally \(7 \pm 2\) items or 5 to 9 items) by reducing 10 items to 3 chunks.

In CBT, the therapist helps the patient identify irrational beliefs or negative automatic thoughts, such as Arthur believing he is a failure. The therapist then works with Arthur to challenge/dispute these thoughts by looking for objective evidence of his achievements. Additionally, behavioral activation is used, where Arthur is given homework assignments (like keeping a diary of positive experiences) to rebuild self-esteem and change behavior patterns.

Award 1 mark for explaining the identification of Arthur's negative/irrational thoughts (e.g., that making one mistake makes him a complete failure).
Award 1 mark for explaining how the therapist challenges or disputes these beliefs by looking for objective evidence.
Award 1 mark for explaining behavioral activation or homework assignments (e.g., keeping a diary of work successes).

Marcus has suffered damage to Wernicke's area, which is located in the left temporal lobe. This brain region is critical for understanding language and producing meaningful speech. Because this area is damaged, Marcus experiences Wernicke's aphasia; he can still produce fluent speech structure, but it lacks meaning (often called 'word salad'), and he is unable to comprehend spoken language from others.

Award 1 mark for identifying Wernicke's area.
Award 1 mark for describing the function of Wernicke's area (language comprehension and understanding/processing meaning).
Award 1 mark for applying to Marcus's symptoms (explaining that damage leads to fluent but meaningless speech / difficulty understanding spoken language).

The type of conformity shown by Mia is internalization. Internalization occurs when an individual changes both their public behavior and their private opinions to align with a group. In this scenario, Mia initially thought the rule was silly but, after being influenced by her friends, she publicly complied by wearing the shoes and privately changed her mind, genuinely agreeing that the black shoes look smarter.

Award 1 mark for identifying internalization (accept informational social influence if explained in terms of changing private beliefs).
Award 1 mark for explaining that Mia changed both her public behavior (buying/wearing the shoes) and her private belief (agreeing they look smarter).

Reconstructive memory theory (such as Bartlett's) states that memory is not a perfect record but is actively reconstructed when retrieved. Sarah was exposed to post-event information during her discussions with other witnesses. This conflicting information (the green jacket) became incorporated into her schema of the event. When she later tried to recall the robbery, she reconstructed the memory using this updated, incorrect detail rather than her original perception.

Award 1 mark for explaining that memory is active/reconstructive and not an exact recording of events.
Award 1 mark for explaining that post-event information (what other witnesses said) can distort or integrate into schemas.
Award 1 mark for applying to the scenario (Sarah reconstructed her memory using the new 'green jacket' detail, replacing her original memory of the blue jacket).

According to Milgram's agency theory, people are more likely to obey when they perceive an authority figure as legitimate. Legitimate authority is often communicated through situational factors, such as uniforms. The park ranger's uniform signals that they have the societal authority to enforce park rules. This cues Toby to enter the agentic state, where he acts as an agent for the authority figure, whereas the business suit does not convey authority in this context, leading to disobedience.

Award 1 mark for identifying uniform/legitimate authority as a key situational factor influencing obedience.
Award 1 mark for applying to the scenario (the park ranger's uniform signaled legitimate authority, which prompted Toby to enter the agentic state and obey, unlike the business suit).

A comparison must include two fully explained points of difference or similarity. One difference is that the Multi-store Model suggests memory is passive and sequential, moving through sensory, short-term, and long-term stores, whereas Bartlett's Reconstructive theory suggests memory is an active process where we retrieve fragmented information and use schemas to fill in the gaps. A second difference is that the Multi-store Model implies memory can be a literal, highly accurate copy of input if rehearsal is maintained, whereas Bartlett argues that memories are rarely exact and are constantly updated and distorted to fit our cultural backgrounds and personal expectations.

Award 1 mark for identifying a difference/similarity and 1 mark for its development (maximum 2 marks per comparison point, up to 4 marks total). Point 1 (Difference in structure/process): Identifies that MSM is structural/linear while Bartlett is active/reconstructive (1 mark); explains this difference (e.g., MSM uses three distinct stores, whereas Bartlett uses schemas to rebuild memories) (1 mark). Point 2 (Difference in accuracy): Identifies that MSM assumes memories are accurate records whereas Bartlett assumes they are distorted (1 mark); explains this difference (e.g., MSM relies on maintenance rehearsal for exact replication, whereas Bartlett suggests social and cultural expectations actively alter recall) (1 mark).

Candidates can provide two similarities or differences. Difference 1: Agency Theory explains the internal psychological mechanism of obedience, suggesting individuals shift from an autonomous state to an agentic state under authority, whereas Social Impact Theory is a mathematical formula (Impact = f(SIN)) focusing on external factors like Strength, Immediacy, and Number of sources. Difference 2: Agency Theory specifically addresses obedience to authority and the resulting moral strain, whereas Social Impact Theory is a general theory of social influence that can explain conformity and bystander behaviour, not just obedience.

Award 1 mark for identifying a comparison point and 1 mark for justification (up to 4 marks total). Difference 1: Identifying that Agency Theory focuses on internal states/states of agency while Social Impact Theory uses external situational formulas (1 mark) and explaining how this is a difference (e.g., Agency Theory involves autonomous/agentic shift, while Social Impact uses S, I, N) (1 mark). Difference 2: Identifying that Agency Theory explains obedience/moral strain while Social Impact is a wider theory of general social influence (1 mark) and explaining how (e.g., Social Impact can be applied to conformity or crowd behaviour, whereas Agency Theory is limited to obedience to authority) (1 mark).

A comparison requires two distinct, explained points. Point 1: Piaget's theory proposes that cognitive development is biological and occurs in four fixed, invariant stages as a child matures, whereas Dweck's mindset theory argues that development is not fixed by biology and instead depends on whether a child has a fixed or growth mindset. Point 2: Piaget suggests children learn independently as 'active scientists' by adapting their own schemas, whereas Dweck highlights the influence of external factors, such as teacher/parent praise, on a child's motivation and learning style.

Award 1 mark for identifying a comparison point and 1 mark for justification (up to 4 marks total). Point 1: Contrast between biological/stage-based development vs mindset malleability (1 mark) + elaboration (Piaget's fixed maturation stages vs. Dweck's focus on fluid intelligence and effort) (1 mark). Point 2: Contrast between independent discovery vs social influence/feedback (1 mark) + elaboration (Piaget's independent schema construction vs Dweck's emphasis on how praise from others shapes growth mindsets) (1 mark).

Candidates must compare the two treatments. Difference 1: CBT is a psychological, talk-based therapy designed to help patients identify and challenge irrational thoughts (the cognitive triad), whereas drug therapy is a biological intervention that uses chemicals (like SSRIs) to increase neurotransmitter levels in the synaptic cleft. Difference 2: CBT requires active effort and motivation from the patient to attend sessions and complete homework, making it side-effect free, whereas drug therapy is passive but often comes with physical side effects such as nausea, weight gain, or sleep disturbance.

Award 1 mark for identifying a comparison point and 1 mark for justification (up to 4 marks total). Point 1 (Underlying approach): Identifies CBT as psychological and drug therapy as biological (1 mark); explains the difference (CBT reframes cognitive distortions, drugs alter neurotransmitters like serotonin) (1 mark). Point 2 (Patient role / Side effects): Identifies that CBT is active/side-effect free while drugs are passive with physical side effects (1 mark); explains the difference (CBT requires homework/engagement, while drugs require simple daily consumption but can cause nausea/insomnia) (1 mark).

Candidates must compare the functions of both hemispheres. Difference 1: The left hemisphere is responsible for language and speech processing, containing specific regions like Broca's and Wernicke's areas, whereas the right hemisphere is dominant for spatial ability, facial recognition, and artistic or creative tasks. Difference 2: Motor and sensory functions are contralateral; the left hemisphere processes sensory signals and voluntary motor movements for the right side of the body, while the right hemisphere processes sensory signals and voluntary motor movements for the left side of the body.

Award 1 mark for identifying a comparison point and 1 mark for explanation (up to 4 marks total). Point 1 (Cognitive/functional specialisation): Identifies language vs spatial/creative differences (1 mark); elaborates with examples (e.g., Broca's area is in the left hemisphere for speech, whereas the right hemisphere is responsible for recognizing faces) (1 mark). Point 2 (Contralateral control): Identifies contralateral motor/sensory control (1 mark); explains the difference (e.g., the left motor cortex controls the right side of the body, whereas the right motor cortex controls the left side) (1 mark).

Candidates must compare the methodologies of the two studies. Difference 1: Bartlett used a naturalistic approach with a story ('War of the Ghosts') which had higher ecological validity but lacked strict control over timing and environment, whereas Peterson and Peterson used a laboratory experiment with high control (using a metronome and preventing rehearsal) but lower ecological validity. Difference 2: The type of material differed significantly; Bartlett used a meaningful story to investigate the qualitative reconstruction of long-term memory over days/weeks/years, whereas Peterson and Peterson used meaningless consonant trigrams (e.g., JKX) to measure the precise duration of short-term memory over 3 to 18 seconds.

Award 1 mark for identifying a comparison point and 1 mark for justification (up to 4 marks total). Point 1 (Experimental control/ecological validity): Identifies Bartlett's low control/high validity vs Peterson and Peterson's high control/low validity (1 mark); explains how (e.g., Bartlett allowed participants to recall in varied environments, while Peterson and Peterson strictly controlled variables in a lab setting using a brown-peterson distractor task) (1 mark). Point 2 (Stimulus material and duration focus): Identifies the difference in stimulus type and memory store tested (1 mark); explains how (e.g., Bartlett used a meaningful story to study LTM reconstruction, whereas Peterson & Peterson used meaningless trigrams to measure STM duration in seconds) (1 mark).

AO1: Neuropsychology explains addiction through the dopamine reward pathway, where substances stimulate dopamine release in the brain, creating a feeling of pleasure that reinforces the behavior. Social influence explains addiction through concepts like conformity, where individuals adopt the behaviors of a peer group to fit in (normative social influence) or due to social learning. AO2: In real life, a teenager might start vaping because their friends do (social influence/conformity), but the physical addiction is sustained because nicotine repeatedly stimulates dopamine receptors in their brain (neuropsychology). AO3: A strength of the neuropsychological explanation is its objective scientific basis, supported by brain imaging showing dopamine activity. However, it is reductionist because it ignores social and environmental contexts. Conversely, social influence explanations are useful for prevention programs (e.g., peer-led interventions) but fail to explain why some individuals develop addictions while others in the same social group do not. Therefore, a holistic approach that integrates both biological vulnerability and social factors (the diathesis-stress model) is more valid than relying on one explanation alone.

Level 1 (1-3 marks): Demonstrates isolated elements of knowledge of biological and/or social factors in addiction. Application is weak or absent. Evaluation is superficial with no clear conclusion. Level 2 (4-6 marks): Demonstrates mostly accurate knowledge of both neuropsychological and social influence explanations. Some application to addiction is present. Evaluation shows some development of points, leading to a partially supported conclusion. Level 3 (7-9 marks): Demonstrates accurate and thorough knowledge of both biological neuropsychology and social influence explanations. Application is clear and well-integrated. Evaluation is balanced and detailed, leading to a logical, well-reasoned conclusion that compares the value of both perspectives.

AO1: Piaget's theory states that children in the pre-operational stage (2-7 years) exhibit egocentrism (difficulty seeing from others' perspectives) and lack logical reasoning. Reconstructive memory theory (Bartlett) states that memory is not an exact recording but is reconstructed using schemas (mental frameworks of knowledge). AO2: When witnessing an event, a 5-year-old might struggle to reconstruct the timeline accurately because they lack the logical schemas of an adult (developmental gap). They might also reconstruct details of a story to fit their limited schemas of the world, leading to confabulation (cognitive memory gap). AO3: Piaget's developmental stages help explain the cognitive readiness of a child to process complex events, but his tasks have been criticized for lacking ecological validity, meaning children might be more capable than he suggested. Reconstructive memory explains the mechanism of how memories become distorted over time through schemas, which is highly applicable to eyewitness testimony. Relying on both theories provides a more complete picture of child witness reliability, showing that young children are not intentionally lying but process and reconstruct information differently due to cognitive and developmental limitations.

Level 1 (1-3 marks): Demonstrates isolated elements of knowledge of Piaget's theory and/or reconstructive memory. Application to child recall is weak or absent. Evaluation is superficial. Level 2 (4-6 marks): Demonstrates mostly accurate knowledge of both developmental stages and reconstructive memory. Application to differences in child and adult recall is present. Evaluation shows some developed points and a partially supported conclusion. Level 3 (7-9 marks): Demonstrates detailed and accurate knowledge of both developmental stages and reconstructive memory. Application is highly relevant and detailed. Evaluation is balanced, analytical, and leads to a logical, well-reasoned conclusion about how the integration of both fields explains child recall.

The correct answer is C. The time of day (9:00 AM vs 3:00 PM) is an extraneous variable because it is a variable other than the independent variable (noise level) that could affect the dependent variable (concentration), potentially confounding the results.

1 mark for identifying the correct option (C).

The correct answer is C. The time of day (9:00 AM vs 3:00 PM) is an extraneous variable because it is a variable other than the independent variable (noise level) that could affect the dependent variable (concentration), potentially confounding the results.

1 mark for identifying the correct option (C).

To find the mean, sum all the scores and divide by the number of participants. Sum of scores: \(12 + 15 + 14 + 18 + 11 + 16 + 13 + 17 = 116\). Number of participants: \(8\). Mean: \(116 \div 8 = 14.5\).

1 mark for showing correct working: \(116 \div 8\) (or showing the addition of all scores divided by 8). 0.5 marks for the correct final answer of 14.5.

To calculate the percentage decrease: \(\text{Percentage Decrease} = \frac{\text{Decrease}}{\text{Original Value}} \times 100\). Decrease: \(60 - 45 = 15\). Original value: \(60\). Percentage decrease: \(\frac{15}{60} \times 100 = 25\%\).

1 mark for correct working: \(\frac{15}{60} \times 100\) or equivalent. 0.5 marks for the correct final answer of 25% (or 25).

First, arrange the reaction times in ascending order: 0.31, 0.38, 0.42, 0.44, 0.47, 0.49, 0.52, 0.55. Since there is an even number of values (8), find the mean of the two middle values (0.44 and 0.47): \(\frac{0.44 + 0.47}{2} = 0.455\) seconds.

1 mark for correctly ordering the data and identifying the two middle values, or showing the working: \(\frac{0.44 + 0.47}{2}\). 0.5 marks for the correct final answer of 0.455 seconds (accept 0.455).

Identify the initial ratio of prosocial to aggressive behavior: \(45:15\). To simplify, find the greatest common divisor of 45 and 15, which is 15. Divide both numbers by 15: \(\frac{45}{15} : \frac{15}{15} = 3:1\).

1 mark for showing correct working, such as writing \(45:15\) and dividing by 15. 0.5 marks for the correct simplified ratio of 3:1.

First, calculate the number of participants who completed the study: \(80 - 12 = 68\). Next, calculate this as a percentage of the total sample: \(\frac{68}{80} \times 100 = 85\%\).

1 mark for showing correct working: \(\frac{68}{80} \times 100\) or equivalent. 0.5 marks for the correct final answer of 85% (accept 85).

To calculate the range, find the difference between the highest value and the lowest value in the data set. Highest value = \(18\). Lowest value = \(3\). Range: \(18 - 3 = 15\).

1 mark for identifying the correct highest and lowest values (18 and 3) and showing subtraction: \(18 - 3\). 0.5 marks for the correct final answer of 15.

Start with the initial fraction: \(\frac{24}{64}\). To simplify, divide the numerator and the denominator by their greatest common divisor, which is 8: \(\frac{24 \div 8}{64 \div 8} = \frac{3}{8}\).

1 mark for showing correct working, such as writing \(\frac{24}{64}\) and showing division by common factors. 0.5 marks for the correct simplified fraction of 3/8.

Step 1: Arrange the raw scores in ascending order: 8, 10, 11, 12, 13, 14, 15, 17, 19. Step 2: Use the position formula \( (n+1)/2 \) where \( n \) is the number of participants. Here, \( (9+1)/2 = 5 \), so the 5th value is selected. Step 3: State the 5th value, which is 13.

1 mark for describing the process of ordering the dataset from lowest to highest (or highest to lowest). 1 mark for explaining how to identify the middle score (e.g., locating the 5th value in a dataset of 9). 0.5 marks for correctly stating that the median score is 13.

The student must identify high ecological validity or natural behavior as the advantage, explain it in the context of the school setting, and contrast it with the artificiality of a laboratory experiment.

1 mark for identifying a valid advantage (e.g., high ecological validity / low demand characteristics). 1 mark for applying it to the school/curriculum scenario. 0.5 marks for explicitly contrasting this with a laboratory experiment.

First, the researcher creates a sampling frame of the 100 students. Next, they determine the interval size \( N \) by dividing the population size by the sample size (\( 100 / 10 = 10 \)). Finally, they choose a random starting point and select every 10th student from the list.

1 mark for explaining the creation of a sampling frame (list of 100 students). 1 mark for explaining how the interval is calculated and used (selecting every 10th student). 0.5 marks for linking the procedure directly to selecting 10 participants from the 100 students.

### Indicative Content

#### AO1 (Knowledge of Research Methods)
* Self-report questionnaires involve participants answering written questions about their thoughts, feelings, or behaviors.
* Closed-ended questions limit respondents to a set of predetermined choices (e.g., rating scales, yes/no), producing quantitative data.
* Quantitative data is easy to analyze, compare, and represent graphically.
* Online questionnaires are cost-effective and can be completed quickly by a large sample.
* Response bias, such as social desirability bias or acquiescence bias, can compromise the validity of questionnaire data.

#### AO2 (Application to Dr. Sterling's Study)
* Dr. Sterling is measuring 'screen time' (minutes) and 'sleep quality' (1–10 scale), which yields quantitative data suitable for correlation analysis.
* University students might not accurately estimate their daily social media screen time, leading to subjective recall errors.
* Social desirability may lead students to underreport screen time or overreport sleep quality because of perceived social expectations.
* Sampling online from a volunteer group of university students may lack representativeness for older or younger populations who have different social media habits and sleep architectures.

#### AO3 (Evaluation and Critique)
* A key strength of using closed-ended questions here is that Dr. Sterling can easily run statistical tests (e.g., Spearman's rho) to determine if there is a correlation between screen time and sleep quality.
* However, closed-ended questions lack depth; they do not explain *why* sleep quality is poor (e.g., late-night blue light exposure, anxiety, or academic stress), which limits the construct validity of the findings.
* An alternative would be to include open-ended questions to gather qualitative depth, or to use a longitudinal sleep diary to reduce retrospective recall bias.
* Alternatively, using objective measures like physiological sleep trackers (e.g., actigraphy) would be more reliable than subjective self-reporting, as subjective scales (1-10) mean different things to different students.
* In conclusion, while an online questionnaire with closed-ended questions is a highly practical and efficient method for establishing a preliminary relationship, it lacks the depth and objective accuracy required to fully understand the impact of social media on sleep.

### Marking Grid (12 Marks Total)

| Level | Marks | Description |
| :--- | :--- | :--- |
| **Level 0** | 0 | No rewardable material. |
| **Level 1** | 1–3 | * Demonstrates isolated elements of knowledge (AO1).
* Little or no application to context (AO2).
* Generic evaluation with little direction or logical structure (AO3). |
| **Level 2** | 4–6 | * Demonstrates some accurate knowledge of research methods (AO1).
* Attempted application to Dr. Sterling's study, though it may be superficial (AO2).
* Evaluation is present but basic, lacking balance or logical chains of reasoning (AO3). |
| **Level 3** | 7–9 | * Demonstrates mostly accurate and detailed knowledge of self-reports and closed-ended questions (AO1).
* Good application to the scenario throughout, linking screen time and sleep quality (AO2).
* Balanced evaluation with developed chains of reasoning, addressing strengths, weaknesses, and some alternatives (AO3). |
| **Level 4** | 10–12 | * Demonstrates accurate, comprehensive, and thorough knowledge of the methodological concepts (AO1).
* Excellent application to the scenario, well-integrated throughout the response (AO2).
* Critical, nuanced evaluation with well-developed, logical chains of reasoning leading to a coherent, balanced conclusion (AO3). |

Madon et al. (2004) found that parents' overestimates of their child's future alcohol use led to a significant increase in the child's actual alcohol consumption, supporting the self-fulfilling prophecy.

1 mark for the correct option (B). Reject all other options.

According to Gibson's direct theory, motion parallax is a depth cue where closer objects appear to move faster across our visual field than objects that are further away when we are moving.

1 mark for the correct option (B). Option A describes linear perspective, Option C describes retinal disparity, and Option D describes texture gradient.

Social Learning Theory explains that people learn through observation and imitation. Chloe identifies her older brother as a role model and observes his behavior. When she sees him praised by his peers, she experiences vicarious reinforcement. This positive reinforcement increases her motivation to imitate the shoplifting behavior herself.

Award up to 2.5 marks:
- 1 mark for identifying the role of observation and the older brother as a role model (AO1).
- 1 mark for explaining the effect of vicarious reinforcement (seeing the brother praised by friends) (AO2).
- 0.5 marks for applying the concept of imitation/modelling to Chloe's subsequent shoplifting action (AO2).

The amygdala is a structure in the limbic system responsible for processing emotional responses, particularly aggression and fear conditioning. Dysfunction or structural abnormalities in the amygdala can lead to a lack of fear of punishment, poor emotional regulation, and a deficit in empathy. Consequently, the individual is more prone to aggressive outbursts and violent criminal actions because they do not experience the typical physiological restraints of fear or distress.

Award up to 2.5 marks:
- 1 mark for explaining the role of the amygdala in regulating fear, emotion, or aggression (AO1).
- 1 mark for explaining the impact of amygdala dysfunction, such as reduced fear conditioning or lack of empathy (AO1).
- 0.5 marks for linking this dysfunction to an increased likelihood of committing violent crimes (AO2).

Leo uses linear perspective, which is a monocular depth cue. In the 2D drawing, the parallel lines representing the sides of the road converge (come closer together) as they extend upwards. Leo's brain interprets this convergence as depth, perceiving the narrower parts of the road as being much further away than the wider parts.

Award up to 2.5 marks:
- 1 mark for identifying the correct monocular depth cue as 'linear perspective' (AO1).
- 1 mark for explaining that parallel lines converge or come together in the distance (AO2).
- 0.5 marks for explaining how this convergence creates the perception of depth on a flat surface (AO2).

Gregory's constructivist theory claims that perception is top-down; we use past knowledge, context, and hypotheses to interpret ambiguous sensory data. In contrast, Gibson's direct theory claims that perception is bottom-up and ecological; the optic array contains rich, sufficient sensory information (such as texture gradients and optic flow) that allows for immediate perception of the environment without needing internal cognitive processing or past experience.

Award up to 2.5 marks:
- 1 mark for explaining Gregory's top-down approach, referencing the role of past experience, schemas, or hypothesis testing (AO1).
- 1 mark for explaining Gibson's bottom-up/direct approach, referencing the rich sensory information in the optic array (AO1).
- 0.5 marks for contrasting the two theories directly (e.g., active reconstruction vs. immediate pickup of ecological information) (AO3).

According to Carl Rogers, unhappiness and anxiety stem from incongruence. Sarah experiences a mismatch between her actual self-concept (her genuine talent and desire to be an artist) and her ideal self, which is distorted by her parents' 'conditions of worth' (demanding she study medicine to receive their approval). Because she cannot align her real feelings with these external expectations, she experiences a state of incongruence, which prevents self-actualisation and causes distress.

Award up to 2.5 marks:
- 1 mark for identifying the concept of 'incongruence' or 'conditions of worth' (AO1).
- 1 mark for applying the concept to the mismatch between Sarah's genuine self-concept (artist) and her parental pressure (medicine) (AO2).
- 0.5 marks for explaining how this mismatch results in psychological distress/anxiety (AO2).

The activation-synthesis theory proposes that dreams are a biological byproduct of sleep. During REM sleep, random electrical impulses are fired from the pons in the brainstem (activation). The higher cognitive centers of the brain, specifically the cerebral cortex, attempt to synthesize these meaningless, random neural inputs into a cohesive story (synthesis). Because the initial sensory and motor signals are totally random and disconnected, the resulting dream narrative is often illogical, bizarre, and lacks coherent structure.

Award up to 2.5 marks:
- 1 mark for explaining 'activation' (random neurological signals sent from the pons during REM sleep) (AO1).
- 1 mark for explaining 'synthesis' (the cerebral cortex attempting to interpret/synthesize these signals into a narrative) (AO1).
- 0.5 marks for linking the random, physiological nature of these signals to the bizarre or nonsensical qualities of the dream (AO3).

Daniel's sleep-wake cycle is a circadian rhythm regulated by an endogenous pacemaker called the suprachiasmatic nucleus (SCN). The SCN is influenced by light (an exogenous zeitgeber). When Daniel works night shifts, his natural circadian rhythm conflicts with his environment. During the day, sunlight triggers the SCN to suppress melatonin production (the sleep hormone), which prevents him from falling asleep despite being physically tired, leading to desynchronisation.

Award up to 2.5 marks:
- 1 mark for identifying the role of the suprachiasmatic nucleus (SCN) / endogenous pacemaker in regulating the circadian sleep-wake rhythm (AO1).
- 1 mark for explaining how night shifts desynchronise his internal clock from exogenous zeitgebers (daylight) (AO2).
- 0.5 marks for explaining the physical outcome, such as the disruption of melatonin secretion causing insomnia during the day (AO2).

Piaget believed that cognitive development drives language development; a child must first form schema/understand a concept before they can develop the language to describe it (thought precedes language). Conversely, the Sapir-Whorf hypothesis suggests linguistic determinism/relativity, arguing that language determines or severely influences thought (language precedes/shapes thought), meaning individuals who speak different languages perceive and think about the world differently.

Award up to 2.5 marks:
- 1 mark for explaining Piaget's theory that cognitive schema and thought precede the development of language (AO1).
- 1 mark for explaining the Sapir-Whorf hypothesis that language shapes, limits, or determines cognitive thought (AO1).
- 0.5 marks for explicitly contrasting the opposing direction of the relationship (thought-to-language vs. language-to-thought) (AO3).

One difference is that Eysenck's theory proposes a biological basis for criminality, suggesting that personality traits (such as high extraversion and neuroticism) are inherited through the nervous system. In contrast, social learning theory argues that criminal behaviour is environmental, learned through the observation and imitation of role models.

Another difference is how they explain the role of reinforcement and conditioning. Social learning theory emphasizes external reinforcement (such as peer approval or material rewards) as a driver of crime, whereas Eysenck focuses on internal conditioning, arguing that individuals with high extraversion and neuroticism struggle to associate anti-social behavior with anxiety, making them harder to socially condition.

Award 1 mark for each point of comparison, and 1 mark for further development/elaboration of each comparison (up to a maximum of 4 marks).

- Eysenck's theory is biological/nature-based as it relies on the inheritance of a nervous system type (1), whereas social learning theory is environmental/nurture-based as it relies on learning from the social environment (1).
- Eysenck's theory focuses on internal personality traits like psychoticism making someone prone to crime (1), whereas social learning theory focuses on external factors like observing and imitating role models in the environment (1).
- Social learning theory suggests anyone can become a criminal depending on their external role models (1), whereas Eysenck's theory argues only individuals with specific physiological personality profiles (high E, N, P) are predisposed to criminal behaviour (1).

Accept other relevant comparison points.

One difference is the source of the dream. Freud's theory suggests that dreams originate from psychological, unconscious desires and unresolved conflicts that we want to satisfy. In contrast, the activation-synthesis hypothesis argues that dreams are a biological byproduct of random electrical impulses sent from the pons in the brainstem during REM sleep.

Another difference is the meaning of the dream content. Freud's theory argues that dreams have deep, symbolic meaning divided into manifest and latent content, which requires interpretation. However, the activation-synthesis hypothesis argues that dreams have no inherent symbolic meaning, and are simply the cerebral cortex's attempt to synthesize and make sense of random neural activity.

Award 1 mark for each point of comparison, and 1 mark for further development/elaboration of each comparison (up to a maximum of 4 marks).

- Freud's theory suggests dreams have psychological meaning/wish fulfillment (1), whereas the activation-synthesis hypothesis views dreams as a meaningless, biological byproduct of brain activity (1).
- Freud's theory splits dream content into symbolic latent and manifest content (1), whereas activation-synthesis suggests the dream narrative is just the cortex trying to make sense of random signals without hidden symbolism (1).
- Freud's theory is highly subjective and difficult to test scientifically (1), whereas the activation-synthesis hypothesis is based on objective, physiological evidence from brain scans and EEG recordings (1).

Accept other relevant comparison points.

### AO1: Knowledge and Understanding
- **Social Learning Theory (SLT):** Proposes that criminal behaviour is learned through observation and imitation of role models. Key processes include attention, retention, reproduction, and motivation (vicarious reinforcement, direct reinforcement, or self-reinforcement).
- **Eysenck’s Theory of Criminal Personality:** Argues that personality is biologically determined by the type of nervous system we inherit. The criminal personality is characterised by high scores in:
- **Extraversion (E):** Under-aroused nervous system, leading to thrill-seeking.
- **Neuroticism (N):** Over-reactive sympathetic nervous system, making them emotionally unstable and difficult to condition.
- **Psychoticism (P):** Cruel, aggressive, and lacking empathy.

### AO2: Application to Arthur
- **SLT Application:** Arthur may observe the older boys (role models) committing vandalism and shoplifting. He pays attention, retains this, and reproduces the acts. He is motivated by vicarious reinforcement (seeing the older boys gain status or items) or direct social reinforcement (being accepted by the peer group).
- **Eysenck's Theory Application:** Arthur's history of being "thrill-seeking" reflects high Extraversion (seeking external stimulation). His "impulsive" and "difficult to discipline" nature suggests high Psychoticism and Neuroticism, meaning he is harder to socialise and does not learn easily from punishment.

### AO3: Evaluation and Analysis
- **SLT Evaluation:** Highly useful in explaining why Arthur's behaviour changed recently when he joined the peer group (environmental trigger). However, it fails to explain why Arthur was impulsive and difficult to discipline *before* he met the group.
- **Eysenck's Theory Evaluation:** Successfully accounts for Arthur's long-term personality traits that have been present since childhood. However, biological determinism ignores free will and cannot easily explain why his actual criminal behaviour only emerged recently.
- **Conclusion:** An interactionist approach is most appropriate. Arthur's biological predisposition (Eysenck's theory) made him more vulnerable to seeking out thrill-seeking peer groups, who then acted as criminal role models (Social Learning Theory).

### Mark Grid (9 Marks total)

**Level 1 (1–2 marks):**
- Demonstrates isolated elements of knowledge and understanding of SLT and/or Eysenck's theory.
- Application to Arthur is weak, inaccurate, or absent.
- Evaluation is superficial, lacking critical analysis or a clear conclusion.

**Level 2 (3–4 marks):**
- Demonstrates some accurate knowledge and understanding of SLT and Eysenck's theory.
- There is some attempt to apply the theories to Arthur, though it may be inconsistent.
- Evaluation points are present but limited, with an attempt at a basic conclusion.

**Level 3 (5–6 marks):**
- Demonstrates mostly accurate and detailed knowledge of both theories.
- Applies both theories effectively to Arthur's behaviour (e.g., matching thrill-seeking to extraversion and peer influence to imitation).
- Evaluative points are developed, and there is a logical, coherent conclusion.

**Level 4 (7–9 marks):**
- Demonstrates precise, detailed, and comprehensive knowledge and understanding of both SLT and Eysenck's theory.
- Sustained and highly effective application to Arthur throughout the essay.
- Evaluative arguments are well-developed, balanced, and critical, leading to a fully justified conclusion (such as an interactionist perspective).

### AO1: Knowledge and Understanding
- **Freud’s Psychoanalytic Theory:** Dreams are the 'royal road to the unconscious' and represent wish fulfilment or unresolved unconscious anxieties. Freud distinguished between:
- **Manifest content:** The literal imagery of the dream as recalled by the dreamer.
- **Latent content:** The hidden psychological meaning of the dream, uncovered through dreamwork (displacement, condensation).
- **Activation-Synthesis Theory (Hobson & McCarley):** Dreams are biological, not psychological. During REM sleep, random electrical signals originate in the pons (activation). The cerebral cortex attempts to synthesise these random signals into a coherent narrative using stored memories (synthesis).

### AO2: Application to Chloe
- **Freud's Application:** The manifest content of Chloe's dream is being lost in a dark forest trying to reach an exam. The latent content could represent her unconscious anxiety about failing in life or feeling unprepared for adult responsibilities, which her ego has disguised using displacement so she does not wake up.
- **Activation-Synthesis Application:** During REM sleep, Chloe's brainstem (pons) sends random signals to areas of the brain controlling movement (running through a forest) and emotion (fear/anxiety). Chloe’s cerebral cortex accesses her memories of school exams and fears of getting lost to construct a storyline to make sense of these random biological signals.

### AO3: Evaluation and Analysis
- **Freud's Theory Evaluation:** Freud's theory offers a highly personalized and meaningful way for Chloe to address her anxiety. However, it is highly subjective, unscientific, and impossible to prove or disprove (unfalsifiable).
- **Activation-Synthesis Evaluation:** This theory is objective, scientific, and supported by physiological evidence (EEG scans showing REM brain activity). However, it reduces Chloe's deep emotional experiences to mere 'biological noise' and fails to explain why she has the *same* recurring, highly specific dream rather than random, varied dreams.
- **Conclusion:** Freud's theory may be more helpful for Chloe's mental well-being as it gives meaning to her anxiety, whereas activation-synthesis provides a stronger, scientifically verifiable explanation of how the dream physically occurs in her brain.

### Mark Grid (9 Marks total)

**Level 1 (1–2 marks):**
- Demonstrates isolated elements of knowledge and understanding of Freud and/or activation-synthesis.
- Application to Chloe is weak, descriptive, or absent.
- Evaluation is superficial, with no clear comparison of biological vs. psychological explanations.

**Level 2 (3–4 marks):**
- Demonstrates some accurate knowledge of both theories (e.g., manifest/latent content and brain activity during REM).
- There is some attempt to apply the theories to Chloe's forest/exam dream.
- Evaluative points are present but limited, with a basic conclusion.

**Level 3 (5–6 marks):**
- Demonstrates mostly accurate and detailed knowledge of both Freud's and the activation-synthesis theories.
- Applies both theories effectively to Chloe's dream (distinguishing the manifest/latent elements and the physiological synthesis process).
- Evaluative points are developed, comparing the scientific nature of activation-synthesis against the subjective nature of psychoanalysis, with a logical conclusion.

**Level 4 (7–9 marks):**
- Demonstrates precise, detailed, and comprehensive knowledge and understanding of both theories.
- Sustained, highly effective application to Chloe's scenario throughout.
- Well-structured, balanced, and critical evaluation of both theories, leading to a fully justified, balanced conclusion.