Option 2 study guide

Option 2 study guide

What this topic covers

These optional topics extend clinical, biological and health psychology. Use the guide to organise the topic into AO1 knowledge, AO2 application and AO3 evaluation. The aim is to move from recognising terms to writing evidence-based psychological explanations.

Required learning objectives

• Describe positive symptoms of schizophrenia, including hallucinations and delusions.
• Describe negative symptoms of schizophrenia, including speech poverty and avolition.
• Explain issues in diagnosis, including co-morbidity, culture bias, gender bias and symptom overlap.
• Explain biological explanations for schizophrenia, including genetics and neural correlates.
• Explain psychological explanations for schizophrenia, including family dysfunction and cognitive explanations.
• Explain drug therapy using typical and atypical antipsychotics.
• Explain cognitive behaviour therapy and family therapy as treatments for schizophrenia.
• Explain the interactionist approach and diathesis-stress model in explaining and treating schizophrenia.
• Explain food preferences using evolutionary explanations, neophobia, taste aversion and learning through social and cultural influences.
• Explain neural and hormonal mechanisms in eating behaviour, including the hypothalamus, ghrelin and leptin.
• Explain biological explanations for anorexia nervosa, including genetic and neural explanations.
• Explain psychological explanations for anorexia nervosa, including family systems theory, social learning theory and cognitive theory.
• Explain biological explanations for obesity, including genetic and neural explanations.
• Explain psychological explanations for obesity, including restraint theory, disinhibition and the boundary model.
• Explain the physiology of stress, including general adaptation syndrome, the hypothalamic pituitary-adrenal system, the sympathomedullary pathway and cortisol.
• Explain the role of stress in illness, including immunosuppression and cardiovascular disorders.
• Explain sources of stress, including life changes, daily hassles and workplace stress.
• Explain methods of measuring stress, including self-report scales and physiological measures.
• Explain individual differences in stress, including personality types A, B and C and hardiness.
• Explain managing and coping with stress, including drug therapy, stress inoculation therapy, biofeedback, gender differences and social support.

Subtopic walkthrough

Schizophrenia

Schizophrenia should be revised by first securing AO1 knowledge: definitions, theories, studies, methods, treatments or data concepts. Then practise AO2 by applying the idea to a scenario or data context where relevant. For AO3, write evaluation that explains why the evidence matters. Useful evaluation routes include validity, reliability, bias, ethics, generalisability, practical application, reductionism, determinism and comparison with alternative explanations. A strong Psychology answer should end with a judgement or implication. Do not leave evaluation as a label such as "low validity" without explaining how that affects the conclusion.

Eating behaviour

Eating behaviour should be revised by first securing AO1 knowledge: definitions, theories, studies, methods, treatments or data concepts. Then practise AO2 by applying the idea to a scenario or data context where relevant. For AO3, write evaluation that explains why the evidence matters. Useful evaluation routes include validity, reliability, bias, ethics, generalisability, practical application, reductionism, determinism and comparison with alternative explanations. A strong Psychology answer should end with a judgement or implication. Do not leave evaluation as a label such as "low validity" without explaining how that affects the conclusion.

Stress

Stress should be revised by first securing AO1 knowledge: definitions, theories, studies, methods, treatments or data concepts. Then practise AO2 by applying the idea to a scenario or data context where relevant. For AO3, write evaluation that explains why the evidence matters. Useful evaluation routes include validity, reliability, bias, ethics, generalisability, practical application, reductionism, determinism and comparison with alternative explanations. A strong Psychology answer should end with a judgement or implication. Do not leave evaluation as a label such as "low validity" without explaining how that affects the conclusion.

How to revise this topic

Build one-page summaries for each subtopic using the same structure: concept, theory or study, evidence, application, evaluation and exam focus. For research-method content, add method, sample, design, validity, reliability and ethical issues. For statistics, add the decision rule and the conclusion.

Exam strategy

Read the command word first. Describe or outline questions mainly test AO1. Apply questions need AO2 and must use the scenario or data. Evaluate or discuss questions need AO3, so every evaluation point should explain why the strength, limitation or evidence issue affects the conclusion.

Evidence and evaluation model

A strong Psychology paragraph should work like a chain. Start with a clear psychological claim. Add evidence from a named study, method, treatment, theory or data pattern. Explain what the evidence shows. Then judge the strength of the claim by referring to validity, reliability, bias, ethics, generalisability, practical application or an alternative explanation. This prevents evaluation becoming a list of labels.

Application model

When a question includes a stem or data, identify the exact detail that matters before explaining the concept. For example, if the stem describes behaviour, link the behaviour to the psychological process. If it provides results, link the result to the conclusion that can and cannot be drawn. If it presents a treatment issue, separate effectiveness from appropriateness so the answer does not drift into a general description.

Writing model

Use one idea per paragraph. Begin with the concept, then add evidence and explain the implication. Avoid sentences that only say a study is strong, weak, useful or flawed. Replace them with sentences that explain why the feature changes confidence in the conclusion. This is especially important in extended answers, where marks depend on sustained reasoning rather than topic recognition.

Worked revision checklist

• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Describe positive symptoms of schizophrenia, including hallucinations and delusions.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Describe negative symptoms of schizophrenia, including speech poverty and avolition.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain issues in diagnosis, including co-morbidity, culture bias, gender bias and symptom overlap.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain biological explanations for schizophrenia, including genetics and neural correlates.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain psychological explanations for schizophrenia, including family dysfunction and cognitive explanations.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain drug therapy using typical and atypical antipsychotics.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain cognitive behaviour therapy and family therapy as treatments for schizophrenia.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain the interactionist approach and diathesis-stress model in explaining and treating schizophrenia.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain food preferences using evolutionary explanations, neophobia, taste aversion and learning through social and cultural influences.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain neural and hormonal mechanisms in eating behaviour, including the hypothalamus, ghrelin and leptin.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain biological explanations for anorexia nervosa, including genetic and neural explanations.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain psychological explanations for anorexia nervosa, including family systems theory, social learning theory and cognitive theory.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain biological explanations for obesity, including genetic and neural explanations.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain psychological explanations for obesity, including restraint theory, disinhibition and the boundary model.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain the physiology of stress, including general adaptation syndrome, the hypothalamic pituitary-adrenal system, the sympathomedullary pathway and cortisol.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain the role of stress in illness, including immunosuppression and cardiovascular disorders.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain sources of stress, including life changes, daily hassles and workplace stress.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain methods of measuring stress, including self-report scales and physiological measures.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain individual differences in stress, including personality types A, B and C and hardiness.
• Can I answer this with AO1 knowledge and at least one evidence-based AO3 point: Explain managing and coping with stress, including drug therapy, stress inoculation therapy, biofeedback, gender differences and social support.

Common pitfalls

Avoid study-name dumping, vague evaluation, unsupported opinion and confusing correlation with causation. Keep explanation and treatment separate in clinical topics, and keep effectiveness and appropriateness separate when judging therapies or interventions.

Final exam reminder

AQA A-level Psychology rewards precise psychological terminology, clear evidence and evaluation that reaches a reasoned conclusion. Strong answers are built from claim, evidence, explanation and judgement.

Readiness check

A student is ready for this topic when they can define the main terms, apply them to a short unfamiliar context and evaluate at least one piece of evidence without using generic wording. If the answer only names a study, add what the study shows. If it only names a limitation, add why the limitation matters. If it only describes behaviour, add the psychological explanation or evidence route that makes the answer analytical.

How to practise answers

Practise in three passes. First, write a short AO1 answer that defines the concept and uses the correct term. Second, add AO2 by applying the idea to a scenario, result or data pattern. Third, add AO3 by judging evidence or method quality. This sequence helps students see which part of the answer is doing which job. It also makes weaknesses easier to diagnose: missing definitions are AO1 problems, unused scenarios are AO2 problems, and unsupported judgements are AO3 problems.

How to compare ideas

Some Psychology questions require direct comparison. A comparison should not describe one idea and then separately describe another. It should use comparative language such as whereas, however or in contrast, and it should compare the same feature in both ideas. For example, compare the type of evidence, the method, the explanation of behaviour, the treatment aim or the strength of the conclusion. This keeps comparison analytical rather than becoming two disconnected mini essays.

How to avoid generic evaluation

Generic evaluation often sounds fluent but does not earn much credit. Phrases such as low validity, biased sample or limited evidence need an explanation of impact. A stronger sentence explains why the issue changes the conclusion. If a sample is biased, say how that limits generalisation. If a method lacks control, say how that affects causal inference. If evidence is consistent, say how that increases confidence in the psychological claim.