2023 AQA IAL Psychology (9685) 模擬試題連答案詳解

Option A is correct because the episodic buffer (introduced by Baddeley in 2000) acts as a temporary store that integrates visual, spatial, and verbal information from other sub-components of working memory and long-term memory into a coherent multidimensional representation. Option B refers to the central executive, Option C refers to the phonological loop, and Option D refers to the visuo-spatial sketchpad.

1.5 marks for selecting option A.
0 marks for selecting option B, C, or D.

Option B is correct. When an inhibitory neurotransmitter (such as GABA) binds to postsynaptic receptors, it causes hyperpolarization of the postsynaptic membrane by making the internal charge of the neuron more negative. This decreases the probability that an action potential will be generated. Depolarization (Option A) is caused by excitatory neurotransmitters. Options C and D refer to clearance mechanisms, not the direct electrical consequence of receptor binding.

1.5 marks for selecting option B.
0 marks for selecting option A, C, or D.

Option C is correct. According to the two-process model, while phobias are acquired via classical conditioning, they are maintained through operant conditioning. Specifically, avoiding the feared phobic stimulus acts as negative reinforcement because it reduces or prevents the unpleasant feeling of anxiety, thereby making the avoidance behavior more likely to be repeated.

1.5 marks for selecting option C.
0 marks for selecting option A, B, or D.

Option A is correct. Adorno et al. identified that individuals with an authoritarian personality exhibit extreme respect for and submissiveness to authority figures, while simultaneously projecting hostility onto those they perceive as socially inferior. Option B describes traits that run opposite to authoritarianism. Option C describes an internal locus of control. Option D relates to peer-conformity factors rather than the specific dispositional structure of authoritarianism.

1.5 marks for selecting option A.
0 marks for selecting option B, C, or D.

According to Craik and Lockhart's Levels of Processing framework, the depth of mental processing directly impacts how well information is remembered. Simple rote repetition represents shallow, acoustic processing, which typically leads to weak memory traces. In contrast, Chloe is linking words and creating mental images, which constitutes deep semantic processing (elaborate rehearsal). This deep level of processing leads to richer, more durable memory traces in long-term memory, making her strategy much more effective for her vocabulary test.

1 mark for identifying that rote repetition represents shallow (acoustic) processing, leading to weaker retention. 1 mark for identifying that linking words and creating mental images represents deep, semantic processing (elaborate rehearsal). 1 mark for applying this to Chloe's scenario, explaining that deep semantic processing creates a more durable memory trace, resulting in better recall for her test.

Samir is demonstrating internalisation, which is the deepest level of conformity. Internalisation occurs when an individual genuinely and permanently changes their public behavior and private beliefs to match those of a group. In Samir's case, spending weeks with the enthusiastic gardening club members led him to accept their viewpoint as correct (likely due to informational social influence). As a result, his change in attitude is stable and persists even when he is at home alone, outside the presence of the group.

1 mark for identifying the type of conformity shown by Samir as internalisation. 1 mark for explaining that internalisation involves a permanent change in both public behavior and private beliefs. 1 mark for applying to Samir by explaining that his practice of organic farming at home alone demonstrates that the group's beliefs have been genuinely integrated into his own belief system.

The therapy described is Systematic Desensitisation, a behavioral therapy based on classical conditioning. The core principle underlying its success is reciprocal inhibition, which states that two incompatible physiological or emotional states (such as intense anxiety/fear and deep relaxation) cannot exist at the same time. By teaching Elena relaxation techniques and having her practice them while gradually exposing herself to the stages of her public speaking anxiety hierarchy, the relaxation response inhibits and eventually replaces the anxiety response.

1 mark for identifying the therapy as Systematic Desensitisation. 1 mark for defining the concept of reciprocal inhibition (the idea that opposing physiological/emotional states like anxiety and relaxation cannot occur simultaneously). 1 mark for applying to Elena's scenario, explaining that pairing relaxation with her public speaking hierarchy will allow the relaxation response to inhibit/replace her fear response.

Marcus is suffering from Broca's aphasia, which points to damage in Broca's area. Broca's area is typically located in the posterior portion of the left frontal lobe. Its primary function is the production of speech, specifically coordinating the muscle movements required to speak and ensuring speech is fluent and grammatically structured. Because Marcus can comprehend language normally but struggles significantly with speech production, this indicates that only his speech production area (Broca's area) is damaged while his comprehension area (Wernicke's area) remains intact.

1 mark for identifying the damaged area as Broca's area (or left frontal lobe). 1 mark for outlining its primary function (speech production/articulation/speech fluency). 1 mark for applying to Marcus, explaining that his intact comprehension alongside impaired, non-fluent speech production is characteristic of damage specifically to this area.

According to Piaget's theory, five-year-old Leo is in the pre-operational stage of cognitive development (which typically lasts from ages 2 to 7). A key characteristic of this stage is egocentrism, which is the child's inability to see a situation from another person's physical or mental perspective. Because Leo is egocentric, he naturally assumes that the doll on the opposite side of the three mountains model experiences the exact same visual perspective that he does from his own seat, leading to his incorrect response.

1 mark for identifying that Leo is exhibiting egocentrism (and/or is in Piaget's pre-operational stage of cognitive development). 1 mark for defining egocentrism as the cognitive limitation where a child is unable to take another person's perspective, assuming everyone sees what they see. 1 mark for applying this to the scenario, explaining that Leo describes his own view because he cannot mentally coordinate the doll's different physical viewpoint.

Priya is experiencing two distinct clinical symptoms of schizophrenia: auditory hallucinations (hearing voices that are not real) and delusions of thought broadcasting (believing that her thoughts are being projected to others). Positive symptoms are defined as behaviors, experiences, or cognitive states that are added to an individual's normal psychological functioning (an excess or distortion of reality), rather than a loss or deficit. Both hallucinations and delusions are classified as positive because they involve the active presence of abnormal sensory experiences and false beliefs that do not occur in healthy individuals.

1 mark for correctly identifying both symptoms: hearing voices as hallucinations (auditory) and believing thoughts are broadcasted as delusions (specifically of thought broadcasting). 1 mark for defining positive symptoms as those representing an excess or distortion of normal functioning (additional experiences). 1 mark for applying this to Priya, explaining that both her hallucinations and delusions represent added experiences/beliefs not present in normal mental functioning.

David's difficulty sleeping is caused by a conflict between his endogenous pacemaker and exogenous zeitgebers, leading to desynchronisation. His endogenous pacemaker, the suprachiasmatic nucleus (SCN) in the brain, acts as an internal master clock regulating his circadian sleep-wake cycle. However, exogenous zeitgebers are external environmental cues that help reset this biological clock. In David's case, the bright daylight (exogenous zeitgeber) entering his room signals to his SCN that it is daytime, suppressing melatonin production and promoting alertness, which directly conflicts with his need to sleep after a night shift.

1 mark for identifying and defining the endogenous pacemaker (e.g., SCN) as the internal biological clock regulating the sleep-wake cycle. 1 mark for identifying and defining exogenous zeitgebers as external environmental cues (such as daylight/light) that entrain/reset the biological clock. 1 mark for applying this to David, explaining that the bright daylight in his bedroom acts as an exogenous zeitgeber that contradicts his need for sleep, causing desynchronisation of his circadian rhythm.

Since the researcher cannot manipulate the independent variable (time spent on social media) and is looking for a relationship between two continuous variables, the most appropriate research method is a correlational study. A key limitation of correlational research is that it cannot establish a causal relationship (cause-and-effect). We cannot conclude that high social media use causes poor exam scores, because a third, uncontrolled variable (such as student motivation, study environment, or general academic ability) could be influencing both variables simultaneously.

1 mark for identifying the research method as a correlation (or correlational study). 1 mark for outlining the general limitation of correlations, which is the inability to establish a cause-and-effect relationship (or the potential presence of confounding/third variables). 1 mark for applying this limitation to the scenario, stating that we cannot prove social media usage causes changes in exam scores, as other variables like motivation could be responsible.

Writing an essay relies heavily on the phonological loop (specifically the articulatory control process, or 'inner voice') because Tara must formulate and process words. Listening to a podcast of people talking also directly recruits the phonological loop to process spoken language. Because both tasks require the same limited-capacity component simultaneously, a cognitive bottleneck occurs, causing her performance to suffer. In contrast, instrumental classical music does not contain spoken language, meaning it does not compete for the phonological loop's limited verbal capacity in the same way, allowing Tara to write her essay more easily.

Award marks as follows:
- 1 mark for identifying that writing the essay and listening to the spoken podcast both recruit/use the same component: the phonological loop (or require verbal processing).
- 1 mark for explaining that because both tasks compete for the limited capacity of the same component (the phonological loop), cognitive overload occurs.
- 1 mark for applying to the change: instrumental music does not contain speech/words, meaning it does not overload the phonological loop's capacity, freeing up verbal resources for writing.

Informational social influence (ISI) occurs when individuals conform because they have a desire to be correct and look to others whom they perceive as having superior knowledge or expertise in an ambiguous situation. In this scenario, the situation is highly ambiguous for Leo because he is a new member and is 'highly unsure of a complex rule'. Leo views the other players as experts ('experienced players') who are likely to know the correct procedure. Consequently, he copies their scoring method to ensure his own points are correct, which is motivated by his desire to be right.

Award marks as follows:
- 1 mark for defining/explaining informational social influence (the desire to be right and looking to others who are perceived as experts for guidance in ambiguous situations).
- 1 mark for applying this to the ambiguity and expertise in the stem: Leo is new and unsure of the rules (ambiguity) and looks to the 'experienced players' (perceived experts).
- 1 mark for applying this to Leo's motivation: Leo copies their actions because he wants to make sure he is playing correctly (desire to be right).

Two key features of systematic desensitisation shown are:
1. The anxiety hierarchy: Jenna and her therapist construct a list of situations from least to most scary (starting with looking at a cartoon drawing of a dog, and ending with sitting in the same room as a real dog).
2. Relaxation training / Reciprocal inhibition: Jenna is taught deep muscle relaxation techniques. Since relaxation and anxiety cannot exist at the same time (reciprocal inhibition), she uses these techniques to remain calm at each stage of her hierarchy.

Award marks as follows:
- 1 mark for identifying and applying the anxiety hierarchy (e.g., Jenna and her therapist design a graduated list of situations involving dogs, from least feared cartoon to most feared real dog).
- 1 mark for identifying and applying relaxation training (e.g., Jenna learning and using deep muscle relaxation techniques to stay calm).
- 1 mark for linking these features to the therapeutic mechanism of reciprocal inhibition / progress (e.g., explaining that Jenna moves step-by-step through the hierarchy while remaining relaxed, replacing fear with relaxation).

When Marcus perceives the threat (the growl), his hypothalamus activates the sympathetic branch of his autonomic nervous system (ANS). The sympathetic nervous system stimulates the adrenal medulla to release the hormone adrenaline into his bloodstream. Adrenaline triggers physiological changes: it increases his heart and breathing rate to pump more oxygenated blood to his muscles (preparing him to run), and dilates his pupils to improve his vision so he can see the danger clearly.

Award marks as follows:
- 1 mark for explaining that the threat activates the sympathetic branch/division of the autonomic nervous system (ANS).
- 1 mark for explaining the chemical mechanism: the sympathetic branch triggers the adrenal medulla to release adrenaline (and/or noradrenaline) into the bloodstream.
- 1 mark for linking this physiological action to the specific changes in the scenario (e.g., increased heart rate/breathing delivers more oxygen to muscles to prepare Marcus to run, or pupil dilation improves his visual awareness of the danger).

AO1: Social support helps individuals resist conformity because the presence of an ally breaks the unanimity of the majority, showing that other options are possible. In terms of obedience, social support from disobedient peers acts as role models, reducing the perceived legitimacy of the authority figure's power. Locus of Control (LOC) is a personality dimension representing how much control individuals believe they have over their own lives. Internals believe they control their own destiny through their actions, whereas externals believe outside forces (luck, fate) determine outcomes. Internals are more resistant to social influence because they rely on their own beliefs, are more self-confident, and take personal responsibility for their actions. AO3: Empirical research supports social support; Milgram found that obedience dropped to \(10\%\) when participants were joined by two disobedient peers. Similarly, Asch showed that conformity dropped to \(5.5\%\) when a dissenting ally was present. Holland replicated Milgram's study and found that \(37\%\) of internals refused to continue to the maximum shock level, compared to only \(23\%\) of externals, directly supporting the LOC explanation. However, Twenge et al. analyzed LOC data over a 40-year period and found that people have become more external but also more resistant to obedience, which challenges the historical consistency of the LOC theory.

Level 4 (10-12 marks): Knowledge of social support and LOC is accurate and detailed. Evaluation of both explanations is thorough, well-reasoned, and supported by empirical research. Specialist psychological terminology is used effectively throughout. Level 3 (7-9 marks): Knowledge is mostly accurate with minor omissions. Evaluation is clear, but may favor one explanation over the other in terms of depth. Appropriate terminology is used. Level 2 (4-6 marks): Knowledge is basic or lacks detail. Evaluation is limited, superficial, or mainly descriptive. Some terminology is used. Level 1 (1-3 marks): Knowledge and evaluation are fragmented, confused, or very brief. Terminology is absent or poorly used.

AO1: Beck proposed that depressed individuals suffer from cognitive vulnerability characterized by faulty information processing, negative self-schemas, and the negative triad (negative views of the self, the world, and the future). Ellis proposed the ABC model, where depression arises from an Activating event (A), which triggers an irrational Belief (B), resulting in negative emotional and behavioral Consequences (C). AO3: Supporting evidence includes Grazioli and Terry's prospective study of pregnant women, which found that cognitive vulnerability assessed before birth predicted postpartum depression, suggesting cognitions are a key causal factor. A major strength is the practical application: both models led to highly effective treatments like Cognitive Behavioral Therapy (CBT) and Rational Emotive Behavior Therapy (REBT). However, a limitation is that cognitive theories describe the thoughts associated with depression but do not definitively establish cause and effect (whether negative thoughts cause depression or are a symptom of it). Additionally, these models struggle to explain complex manic or psychotic symptoms of depression, such as hallucinations or extreme anger.

Level 4 (10-12 marks): Detailed and accurate knowledge of both Beck's and Ellis's models. Robust, balanced, and critical evaluation of the cognitive approach to depression. Clear, coherent structure with effective use of specialist terminology. Level 3 (7-9 marks): Mostly accurate knowledge. Clear evaluation, though one model or point may lack depth. Appropriate terminology used. Level 2 (4-6 marks): Limited/general knowledge. Evaluation is basic, superficial, or heavily descriptive. Some terminology used. Level 1 (1-3 marks): Fragmented/confused knowledge and evaluation. Minimal terminology.

AO1: Piaget proposed that children construct mental representations of the world called schemas. Learning occurs through adaptation: assimilation involves fitting new experiences directly into existing schemas, whereas accommodation involves modifying existing schemas or creating entirely new ones when new information does not fit. Equilibration is the motivational force that drives learning; when new information causes cognitive discomfort (disequilibrium), the child is motivated to adapt their schemas to restore cognitive balance (equilibrium). AO3: Piaget's theory has high practical application, transforming primary school education into student-centered, active discovery learning. However, Vygotsky criticized Piaget for underestimating the role of social interaction, language, and cultural instruction in cognitive development. Methodological issues also weaken Piaget's evidence; his reliance on clinical interviews may have led him to underestimate children's capabilities because the tasks were too abstract or confusing. Furthermore, his research relied on a small, non-representative sample of European children, limiting the cross-cultural generalizability of his developmental milestones.

Level 4 (10-12 marks): Accurate and detailed knowledge of schemas, assimilation, accommodation, and equilibration. Evaluation of Piaget's theory is deep, covering educational applications and theoretical/methodological criticisms. Highly structured and coherent. Level 3 (7-9 marks): Mostly accurate knowledge of key terms. Evaluation is sound but may omit key criticisms or be less detailed. Appropriate terminology used. Level 2 (4-6 marks): Basic/general knowledge of Piagetian concepts. Evaluation is limited or descriptive. Level 1 (1-3 marks): Isolated fragments of knowledge with little to no evaluation.

AO1: Drug therapy involves antipsychotics. Typical antipsychotics (e.g., Chlorpromazine) act as dopamine antagonists, blocking D2 receptors in synapses to reduce dopamine activity and target positive symptoms like hallucinations. Atypical antipsychotics (e.g., Clozapine, Risperidone) target both dopamine and serotonin receptors, treating both positive and negative symptoms with fewer motor side effects. AO3: Support comes from clinical trials; Thornley et al. found Chlorpromazine associated with better functioning and lower relapse rates than a placebo, while Meltzer found Clozapine effective in \(30\%\) to \(50\%\) of treatment-resistant cases. However, side effects are a major issue, ranging from involuntary movements (tardive dyskinesia) in typical antipsychotics to the risk of a fatal blood disorder (agranulocytosis) with Clozapine, which can reduce patient compliance. Ethical issues also exist, as critics argue drugs act as a 'chemical straitjacket' to control behavior rather than curing the underlying psychological cause of schizophrenia, leading to high relapse rates when patients discontinue use.

Level 4 (10-12 marks): Highly detailed and accurate knowledge of both typical and atypical antipsychotics. Well-developed evaluation covering clinical efficacy, side effects, and ethical/palliative criticisms. Excellent structure and terminology. Level 3 (7-9 marks): Mostly accurate knowledge. Evaluation is clear and balanced but may lack depth in some areas. Good terminology used. Level 2 (4-6 marks): Limited knowledge of drug treatments. Evaluation is basic, superficial, or largely descriptive. Level 1 (1-3 marks): Fragmented knowledge and minimal evaluation. Terminology is weak or absent.

The student correctly identifies the positive symptom as a delusion (specifically a delusion of control or persecution). They then distinguish it from a hallucination by explaining that a delusion is a cognitive error in belief, whereas a hallucination is a sensory experience occurring without any actual external sensory input.

1 mark: Correctly identifies the positive symptom as a delusion. 1 mark: Correctly explains the difference (e.g., delusion is a false belief or thought process, whereas a hallucination is a false sensory experience in the absence of an external stimulus). Reject answers that do not distinguish cognitive belief from sensory perception.

The response correctly diagnoses the sleep disorder as Obstructive Sleep Apnoea (OSA) and identifies the physiological cause as the relaxation of upper airway muscles/soft tissues in the throat during sleep, leading to temporary airway blockage.

1 mark: Correctly identifies the disorder as (Obstructive) Sleep Apnoea. 1 mark: Correctly identifies the physical mechanism of airway collapse or throat muscle relaxation during sleep. Accept similar phrasing describing mechanical blockage of the trachea/throat due to muscle relaxation.

The student identifies 'egocentrism' (the inability to see a situation from another person's point of view) as the cognitive limitation illustrated by Piaget's Three Mountains Task. They also correctly state that this limitation is a characteristic feature of the Pre-operational stage of cognitive development (typically ages 2 to 7).

1 mark: Correctly identifies the cognitive limitation as egocentrism. 1 mark: Correctly names the Pre-operational stage (accept 'preoperational'). Reject answers referring to other stages like concrete operational.

The description of fluent but meaningless speech (jargon aphasia) and impaired comprehension point directly to damage in Wernicke's area. In the vast majority of right-handed individuals, language lateralisation means this area is located in the left temporal lobe (left hemisphere).

1 mark: Correctly identifies Wernicke's area (accept Wernicke's speech area). 1 mark: Correctly identifies the Left hemisphere. Reject Broca's area or Right hemisphere.

AO1 Content: Candidates should describe key biological explanations of schizophrenia. This includes: (1) Genetic explanations: schizophrenia is polygenic and aetiologically heterogeneous; key evidence comes from twin, family, and adoption studies (e.g., Gottesman's research showing a 48% concordance rate for MZ twins compared to 17% for DZ twins). (2) The Dopamine Hypothesis: original hypothesis suggested hyperdopaminergia (excessive dopamine activity in the subcortex, particularly the Broca's area, causing positive symptoms); updated hypothesis includes hypodopaminergia (insufficient dopamine in the prefrontal cortex, leading to negative symptoms). (3) Neural Correlates: structural and functional brain abnormalities associated with the disorder, such as enlarged ventricles (linked to negative symptoms and brain tissue loss) and hypofrontality (reduced activity in the prefrontal cortex). AO3 Content: Candidates should critically evaluate these biological explanations. Points of evaluation include: (1) Methodological issues in genetic research: early twin studies failed to fully control for shared environmental influences, which may overestimate genetic concordance. However, adoption studies (e.g., Tienari et al.) support genetic vulnerability. (2) Treatment causation fallacy and biochemical support: the efficacy of dopamine antagonists (antipsychotics) in reducing positive symptoms supports the dopamine hypothesis, but success in treatment does not necessarily mean dopamine imbalance is the primary cause. (3) The role of other neurotransmitters: modern atypical antipsychotics also affect serotonin and glutamate, indicating the dopamine hypothesis is too simplistic on its own. (4) Issues with neural correlates: correlation does not equal causation; brain structural abnormalities could be a consequence of the disorder or its treatment (e.g., long-term antipsychotic use) rather than the cause. (5) Interactionist approach (Diathesis-Stress model): biological vulnerability may only express itself as schizophrenia when triggered by environmental stressors, providing a more comprehensive explanation.

AO1 (8 marks): Level 4 (7-8 marks): Knowledge of biological explanations (genetic, neural, biochemical) is accurate, detailed, and well-structured. Level 3 (5-6 marks): Knowledge is mostly accurate and structured, with some minor omissions in detail. Level 2 (3-4 marks): Basic knowledge is demonstrated, but lacks depth and may contain inaccuracies. Level 1 (1-2 marks): Fragmented and weak knowledge of biological explanations. AO3 (12 marks): Level 4 (10-12 marks): Evaluation is detailed, highly critical, and well-balanced. It addresses issues of causation, reductionism, and evidence with sophisticated psychological terminology. Level 3 (7-9 marks): Evaluation is clear and relevant, showing reasonable critical analysis of biological explanations. Level 2 (4-6 marks): Limited evaluation, tending to list points without fully developing arguments or linking back to the debate. Level 1 (1-3 marks): Superficial evaluation with little or no effective critical analysis.

AO1 Content: Candidates must outline the debate between reductionism and holism. This includes: (1) Holism: the idea that human behaviour should be viewed as a whole integrated experience, not as individual components (e.g., Gestalt psychology and Humanism). (2) Reductionism: the belief that complex human behaviour can be explained by breaking it down into simpler component parts. This operates on levels of explanation, starting from high-level socio-cultural explanations, mid-level psychological explanations, down to low-level biological/physical components. Candidates should distinguish between biological reductionism (explaining behaviour purely via neurochemistry, genetics, and brain structure) and environmental (stimulus-response) reductionism (explaining behaviour as simple learned associations). AO3 Content: Candidates should critically evaluate both sides of the debate, referencing at least two distinct psychological topics (e.g., Psychopathology, Memory, Gender, or Social Influence). Evaluation points include: (1) Scientific credentials of reductionism: breaking down behaviour allows for empirical testing, operationalisation of variables, and high internal validity, which is vital for psychology's status as a science. (2) Practical applications: biological reductionism has led to successful biological therapies (e.g., SSRIs for depression or OCD), which have improved millions of lives. (3) Limitations of reductionism: by focusing on micro-level components, reductionist explanations lose context and can oversimplify complex human experiences, meaning they may lack ecological and construct validity (e.g., reducing memory to brain structures ignores the subjective meaning of memories). (4) Strengths of holism: some aspects of social behavior only emerge within a group context and cannot be understood at an individual level (e.g., conformity or deindividuation). (5) Limitations of holism: holistic explanations are difficult to test scientifically, can be speculative, and do not easily lend themselves to practical, targeted treatments. (6) Resolution: the interactionist approach (such as the Diathesis-Stress model) successfully bridges the gap between reductionist mechanisms and holistic influences.

AO1 (8 marks): Level 4 (7-8 marks): Accurate and detailed knowledge of reductionism, levels of explanation, and holism, with clear conceptual understanding. Level 3 (5-6 marks): Good knowledge of the debate with mostly accurate descriptions and clear terminology. Level 2 (3-4 marks): Basic understanding of the concepts, but description may be limited or lack precision. Level 1 (1-2 marks): Very limited or confused description of the debate. AO3 (12 marks): Level 4 (10-12 marks): Evaluation is critical, sophisticated, and sustained. At least two topics are effectively integrated into the discussion to illustrate the debate. Clear balance between strengths and weaknesses of both positions. Level 3 (7-9 marks): Relevant and developed evaluation, applying the debate to at least one topic area clearly, with reasonable critical awareness. Level 2 (4-6 marks): Mostly descriptive evaluation or limited application to topics. Arguments may be generic. Level 1 (1-3 marks): Weak, superficial evaluation that fails to connect concepts to broader debates or topics.

AO1 Content: Candidates should describe both restoration and evolutionary theories. (1) Restoration theories (e.g., Oswald, Horne): sleep allows the body and brain to recover from daily wear and tear. Oswald suggested that NREM sleep is essential for physical recovery (somatic repair, growth hormone release) and REM sleep is essential for brain recovery (neurotransmitter replenishment, cognitive synthesis). Horne distinguished between 'core sleep' (stages 3/4 NREM and REM, essential for brain function) and 'optional sleep' (stages 1/2 NREM, which serve no essential restorative function). (2) Evolutionary/Ecological theories (e.g., Webb, Meddis): sleep is an adaptive behaviour that evolved to increase survival. Key concepts include energy conservation (sleeping when metabolism is low during cold/dark hours), predator avoidance (staying quiet and hidden when vulnerable to predators), and waste-of-time hypothesis (sleeping when food-seeking is inefficient). AO3 Content: Evaluation should contrast the two approaches and use empirical evidence: (1) Evidence for restoration: Growth hormone secretion peaks during slow-wave sleep (stages 3 and 4), supporting somatic repair. Extreme sleep deprivation studies (e.g., Randy Gardner) show cognitive deficits, supporting REM's role in brain restoration. (2) Critique of restoration: Complete physical exhaustion does not significantly increase sleep duration, suggesting sleep is not solely for bodily recovery. (3) Evidence for evolutionary theory: Comparative studies show that prey animals (e.g., sheep) sleep less than predators (e.g., lions), supporting the predator avoidance and safety arguments. (4) Critique of evolutionary theory: Evolutionary theories are retrospective, difficult to test empirically, and do not explain why sleep involves a dangerous loss of consciousness (which seems maladaptive if survival is the only goal). (5) Synthesis: Sleep likely serves multiple, overlapping functions where physiological restoration is facilitated by evolutionary adaptations.

AO1 (8 marks): Level 4 (7-8 marks): Clear, comprehensive, and accurate description of both restoration (Oswald/Horne) and evolutionary theories of sleep. Level 3 (5-6 marks): Mostly accurate description of both theories, with minor imbalance or slight omissions. Level 2 (3-4 marks): Basic description of one or both theories, lacking depth and clear theoretical concepts. Level 1 (1-2 marks): Confused or extremely brief descriptions of why we sleep. AO3 (12 marks): Level 4 (10-12 marks): Evaluation is detailed, balanced, and uses empirical studies to critique both theories. Excellent analysis of scientific testability and evolutionary adaptations. Level 3 (7-9 marks): Clear evaluation points with effective use of evidence, though one theory may be evaluated in more depth than the other. Level 2 (4-6 marks): Limited evaluation, with reliance on generic points or poorly explained research evidence. Level 1 (1-3 marks): Highly subjective or undeveloped evaluation, showing minimal understanding of scientific critique.

AO1 Content: Candidates should outline the key tenets of Vygotsky's socio-cultural theory of cognitive development. This includes: (1) Social constructivism: cognitive development is a social process driven by interaction with more knowledgeable others (MKOs) and cultural tools. (2) Elementary vs. Higher Mental Functions: elementary functions (attention, sensation, perception, memory) are biological and develop into higher mental functions (logical reasoning, abstract thought) through cultural mediation. (3) The role of language: language is the primary tool of thought; it transitions from social speech to private speech (used for self-regulation) and finally to silent inner speech. (4) The Zone of Proximal Development (ZPD): the gap between what a learner can do independently and what they can do with assistance. (5) Scaffolding: the temporary support structures provided by an adult or peer to help a child cross the ZPD, which are gradually withdrawn as the child becomes competent (Wood, Bruner & Ross). AO3 Content: Evaluation points should include: (1) Empirical support for ZPD and Scaffolding: studies like Wood and Middleton (1975) demonstrating how mothers adjust their support to a child's progress on a task, and McNaughton and Leyland (1990) confirming that children perform at a higher level with maternal assistance. (2) Practical application: highly influential in modern education, leading to the adoption of cooperative learning, peer tutoring, and reciprocal teaching in classrooms rather than traditional passive lecturing. (3) Comparison with Piaget: Piaget viewed cognitive development as self-discovery driven by biological readiness, whereas Vygotsky emphasized external social and cultural factors. This highlights a classic debate in cognitive psychology (nature vs. nurture / individual vs. social). (4) Cross-cultural support: research shows that cognitive skills are culturally specific (e.g., Gredler's research on counting systems in Papua New Guinea), supporting Vygotsky's claim that culture shapes thought. (5) Criticisms: Vygotsky's theory lacks detail on biological development, ignores individual differences in learning pace, and his early death meant many concepts were left conceptually vague and less scientifically operationalised.

AO1 (8 marks): Level 4 (7-8 marks): Highly accurate, detailed, and structured description of Vygotsky's theory, incorporating ZPD, scaffolding, language, and cultural tools. Level 3 (5-6 marks): Mostly accurate description of key concepts, though some areas may lack detail. Level 2 (3-4 marks): Basic description of the theory; key terms may be mentioned but are poorly defined. Level 1 (1-2 marks): Fragmented and weak knowledge of Vygotskian concepts. AO3 (12 marks): Level 4 (10-12 marks): Evaluation is critical, sophisticated, and sustained. There is a clear and effective comparison with alternative viewpoints (e.g., Piaget) and a thorough analysis of empirical support and educational applications. Level 3 (7-9 marks): Relevant and developed evaluation, offering clear criticisms and support with appropriate psychological terminology. Level 2 (4-6 marks): Limited or descriptive evaluation, possibly focusing too much on describing Piaget rather than evaluating Vygotsky. Level 1 (1-3 marks): Superficial evaluation showing very little critical analysis.

Operationalisation involves defining variables in a precise way so they can be measured or manipulated. For instance, rather than measuring 'intelligence', a researcher operationalises it as 'a score on a specific 40-item IQ test'. This allows other researchers to replicate the research exactly.

1.5 marks for a complete definition mentioning the translation of variables into specific, measurable, or observable operations. 1 mark for a partial definition, such as stating it means making variables measurable without further elaboration. 0 marks for an incorrect definition.

A pilot study serves as a trial run for the main experiment. It is conducted with a small sample to identify any design flaws, potential confounding variables, or practical issues with instructions or apparatus, saving time and resources before the full study is launched.

1.5 marks for explaining it is a small-scale trial run and identifying its purpose (testing feasibility, design, or identifying flaws). 1 mark for a partial definition (e.g., identifying it only as a trial run without specifying its purpose). 0 marks for an incorrect definition.

Standardised instructions ensure that every participant receives exactly the same information and guidance during the experiment. This eliminates researcher bias and prevents differences in instruction delivery from acting as confounding variables, thereby increasing internal validity.

1.5 marks for a complete definition that mentions the identical/consistent delivery of directions to all participants and its role in controlling extraneous variables. 1 mark for a partial definition that only states they are the same instructions given to everyone. 0 marks for an incorrect definition.

External validity is about generalisability. It includes ecological validity (generalisability to real-world environments), population validity (generalisability to other groups of people), and temporal validity (generalisability over time).

1.5 marks for a definition that clearly states it is the extent to which findings can be generalised beyond the specific study context (e.g., to other settings, people, or times). 1 mark for a partial definition that mentions generalisability but lacks detail or context. 0 marks for an incorrect definition.

To establish inter-observer reliability, multiple observers independently observe and record the same event using a standardized coding system. Their data are then correlated; a high positive correlation (typically \(r \ge 0.80\)) indicates good reliability.

1.5 marks for a definition highlighting the consistency or agreement between two or more independent observers recording the same behavior. 1 mark for a partial definition (e.g., mentioning observers getting similar results without specifying independence or the context of observing the same behavior). 0 marks for an incorrect definition.

Random allocation is a crucial control measure in independent groups designs. By using methods like random number generators or drawing names from a hat, it minimizes individual differences between groups, helping to control participant variables.

1.5 marks for a complete definition stating that participants are assigned to conditions purely by chance, ensuring an equal probability of group placement to control participant variables. 1 mark for a partial definition that only mentions putting people into groups randomly. 0 marks for an incorrect definition.

A directional hypothesis must state the expected direction of the difference. Both levels of the independent variable (binaural beats vs. white noise) and the operationalised dependent variable (time taken in seconds to complete a maze) must be clearly stated. For example: 'Participants who listen to binaural beats will take significantly fewer seconds to complete the maze than those who listen to white noise.'

1.5 marks: Clearly operationalised dependent variable (specifically mentioning 'time in seconds to complete the maze'). 1 mark: Clearly stated levels of the independent variable ('binaural beats' vs 'white noise'). 1 mark: Correct directional phrasing ('fewer seconds/faster time' or 'more seconds/slower time').

To calculate the median, first order the data set from lowest to highest: 45, 50, 56, 63, 67, 74, 74, 82, 88, 91. Since there is an even number of values (n = 10), calculate the mean of the two central values (the 5th and 6th values). The 5th value is 67 and the 6th value is 74. Median = (67 + 74) / 2 = 70.5.

1 mark for ordering the data correctly. 1 mark for identifying the correct method for an even number of data points. 1.5 marks for the correct final answer of 70.5.

The Wilcoxon Signed Ranks test is the most appropriate statistical test because the study is looking for a difference between two conditions, uses a repeated measures design (the same participants are tested before and after therapy), and the data collected is ordinal (an anxiety rating scale from 1 to 10).

1.5 marks for correctly identifying the Wilcoxon Signed Ranks Test. 2 marks for explaining two reasons in context (1 mark per reason: e.g., repeated measures design, ordinal data).

The researcher would expect a positive correlation (as temperature increases, aggressive incidents are expected to increase). The most appropriate graphical representation is a scattergraph because the study is looking at the relationship between two continuous co-variables.

1 mark for identifying a positive correlation. 1 mark for identifying a scattergraph. 1.5 marks for explaining why it is suitable (displays the relationship between two continuous co-variables).

Strength: High ecological validity because the behavior is studied in a real-life environment (busy underground station) where it naturally occurs, making findings generalisable. Limitation: Lack of control over extraneous variables (e.g., crowd density, noise), making replication difficult and preventing the establishment of cause-and-effect.

1.75 marks for explaining a strength linked to the underground station context. 1.75 marks for explaining a limitation linked to the underground station context.

Investigator effects refer to any physical or behavioral cues from the researcher (such as tone of voice, body language, or leading questions) that might bias the participants' responses. To minimize these, the researcher can use a double-blind procedure where neither the participant nor the researcher collecting the memory data knows which condition the participant is in.

1.5 marks for a clear definition of investigator effects. 1 mark for identifying an appropriate control method (e.g., double-blind or standardized instructions). 1 mark for explaining how this method works in this study.

Order effects occur when the order of conditions influences performance. In this study, participants might perform better in the second condition due to practice, or worse due to boredom or fatigue. This can be controlled using counterbalancing (e.g., half do music first, half do silence first).

1.5 marks for explaining how order effects can act as a confounding variable in this proofreading task. 1 mark for identifying counterbalancing. 1 mark for explaining how counterbalancing is applied to this study.

To calculate the size of each stratum in a sample of 100: 1. Adults (60%): (60/100) * 100 = 60 participants. 2. Elderly (25%): (25/100) * 100 = 25 participants. 3. Youths (15%): (15/100) * 100 = 15 participants.

1.5 marks for showing the correct workings for all three categories (0.5 marks per calculation). 2 marks for the correct final numbers (Adults = 60, Elderly = 25, Youths = 15).

For Part a: A directional hypothesis must state the expected direction of the difference (higher scores/improvement) and operationalise both the independent variable (ambient lavender scent vs. no ambient scent) and the dependent variable (concentration task scores). For Part b: To find the median, first arrange the data in ascending order: 29, 34, 38, 41, 45, 48. Because there is an even number of values (6), find the mean of the two middle values (38 and 41): \((38 + 41) / 2 = 39.5\).

Part a: 1.5 marks for a fully operationalised directional hypothesis. 1 mark for a directional hypothesis where variables are only partially operationalised. 0 marks if the hypothesis is non-directional or is written as an aim. Part b: 2 marks total: 1 mark for showing correct working (arranging data in order and identifying the middle values 38 and 41), and 1 mark for the correct answer of 39.5.

For Part a: The study is investigating a relationship between two continuous co-variables (hours of sleep and exam score), making a scattergram the only appropriate graphical format. For Part b: The formula for the range is: \(\text{Highest value} - \text{Lowest value}\). In this dataset, the highest value is 9.0 and the lowest value is 4.0. Range = \(9.0 - 4.0 = 5.0\).

Part a: 1.5 marks total: 0.5 marks for identifying scattergram/scatter graph/scatter plot, and 1 mark for explaining that it is suitable because it displays a relationship or correlation between two numerical co-variables. Part b: 2 marks total: 1 mark for showing correct working (subtracting the lowest value 4.0 from the highest value 9.0) and 1 mark for the correct answer of 5.0 (or 5).

To calculate the mean percentage of words correctly recalled:
1. Find the total number of words recalled by the group:
\(8 + 12 + 6 + 10 + 7 + 9 + 11 + 5 = 68\)

2. Find the mean number of words recalled by dividing the total by the number of participants (\(n = 8\)):
\(68 / 8 = 8.5\) words

3. Calculate this mean as a percentage of the total possible words (20 words):
\((8.5 / 20) \times 100 = 42.5\%\)

Alternatively, convert each individual score to a percentage first, sum them, and divide by 8:
Percentages: 40%, 60%, 30%, 50%, 35%, 45%, 55%, 25%.
Sum of percentages = \(340\%\)
Mean percentage = \(340 / 8 = 42.5\%\).

Marks allocation:
- 1 mark for showing the correct calculation of the total words recalled (68) or individual percentages.
- 1 mark for dividing the total by the number of participants (8) to find the mean recall of 8.5 words.
- 1 mark for setting up the correct percentage conversion formula: \((8.5 / 20) \times 100\).
- 1 mark for the correct final answer of 42.5% (accept 42.5).

To calculate the percentage decrease in mean anxiety scores:
1. Calculate the mean pre-intervention anxiety score:
\(\text{Mean}_{\text{pre}} = (42 + 38 + 45 + 48 + 37) / 5 = 210 / 5 = 42\)

2. Calculate the mean post-intervention anxiety score:
\(\text{Mean}_{\text{post}} = (28 + 26 + 30 + 29 + 27) / 5 = 140 / 5 = 28\)

3. Calculate the absolute decrease in mean score:
\(42 - 28 = 14\)

4. Calculate the percentage decrease relative to the pre-intervention mean:
\((14 / 42) \times 100 = 33.333...\%\)

Rounding to two decimal places gives 33.33%.

Marks allocation:
- 1 mark for calculating the correct pre-intervention mean (42).
- 1 mark for calculating the correct post-intervention mean (28).
- 1 mark for correctly setting up the percentage decrease formula: \((14 / 42) \times 100\) (or equivalent).
- 1 mark for the correct final answer of 33.33% (accept 33.33).

To calculate the percentage of participants with times greater than the mean:
1. Calculate the sum of all completion times:
\(45 + 52 + 61 + 48 + 55 + 72 + 50 + 63 + 58 + 49 = 553\) seconds.

2. Calculate the mean completion time:
\(553 / 10 = 55.3\) seconds.

3. Identify which completion times are strictly greater than 55.3 seconds:
These times are 58, 61, 63, and 72. There are 4 participants.

4. Calculate the percentage:
\((4 / 10) \times 100 = 40.0\%\).

Marks allocation:
- 1 mark for calculating the correct sum of times (553) or the mean completion time (55.3 seconds).
- 1 mark for correctly identifying that there are 4 participants with scores greater than the mean.
- 1 mark for setting up the correct percentage calculation: \((4 / 10) \times 100\).
- 1 mark for the correct final answer of 40.0% (accept 40% or 40).

To calculate the expected frequency for Male participants who prefer Sciences:
1. Find the row total for Males:
\(30 + 15 = 45\)

2. Find the column total for Sciences:
\(30 + 20 = 50\)

3. Find the grand total of participants:
\(30 + 15 + 20 + 35 = 100\)

4. Apply the expected frequency formula:
\(\text{Expected Frequency} = (\text{Row Total} \times \text{Column Total}) / \text{Grand Total}\)
\(\text{Expected Frequency} = (45 \times 50) / 100 = 2250 / 100 = 22.5\)

Marks allocation:
- 1 mark for calculating the correct row total for Males (45) and column total for Sciences (50).
- 1 mark for calculating the correct grand total of participants (100).
- 1 mark for demonstrating a correct application of the expected frequency formula: \((45 \times 50) / 100\).
- 1 mark for the correct expected frequency of 22.5.