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Every one of the twenty core studies in Component 02 belongs to one of five areas of psychology, and the area a study sits in tells you a great deal about how it explains behaviour before you have read a single line of its method. The individual differences area is, in one sense, the mirror image of the social area with which the course begins. Where the social area looks outward — asking what feature of a situation would produce a given behaviour in almost anyone — the individual differences area looks at the person, and asks the opposite question: not "why does everyone behave this way?" but "why do people behave differently from one another, and what do those differences tell us?" Why does one person develop a crippling phobia while another does not? Why do some people score highly on a test of reading emotions in others while some struggle? Why does a psychopath's language differ, in measurable ways, from that of other offenders? The individual differences area treats human variation not as noise to be averaged away but as the very phenomenon worth explaining.
This lesson does not tell the story of any single study. Instead it establishes the defining principles of the individual differences area — its core assumptions, its favoured methods, and its characteristic strengths and weaknesses — and shows how it differs from the other four areas you will meet. Because Component 02 examines you not only on individual studies but on the areas, perspectives and debates that organise them (Section B), a secure grasp of what makes an explanation one of "individual differences" is worth as much in the exam as knowing any one procedure. Throughout, the area's two key themes — understanding disorders (Freud 1909, Little Hans; Baron-Cohen et al. 1997) and measuring differences (Gould 1982; Hancock et al. 2011) — serve as illustrations of the principles in action.
| This lesson covers | OCR H567 Component 02 element | AO focus |
|---|---|---|
| Defining assumptions of the individual differences area (people differ, and those differences matter and can be studied) | Section B — Areas: Individual differences | AO1 knowledge; AO3 evaluation of the area |
| Methods typical of the area (case studies, psychometric testing, quasi-experiments, review/analysis of data) | Section B — Areas: Individual differences | AO1; AO2 recognising the area in a novel study |
| The idiographic emphasis and its trade-off against the nomothetic | Section B — Areas: Individual differences | AO1; AO3 |
| Strengths and weaknesses of the individual differences approach | Section B — Areas: Individual differences | AO3 evaluation |
| How the area differs from social, cognitive, developmental and biological areas | Section B — Areas | AO1; AO3 comparative judgement |
| The four individual-differences core studies as illustrations of the area's principles | Section A — Core studies (Individual differences) | AO1; AO2 application |
The specification is referenced descriptively; consult the official OCR H567 specification document for its exact published wording. This lesson develops AO1 (defining the area's assumptions and methods), AO2 (recognising an "individual differences" explanation in an unfamiliar scenario, a recurring Section B and Section C demand) and AO3 (evaluating the usefulness and limitations of the individual differences approach and weighing it against the other areas).
The defining assumption of the individual differences area is that people differ from one another in psychologically important and measurable ways — in personality, in intelligence, in mental health and in behaviour — and that understanding those differences is itself a central task of psychology. Where the social psychologist asks "what situation produces this in anyone?" and the biological psychologist asks "what physiological mechanism underlies this in the species?", the individual differences psychologist asks "how and why do individuals differ, and what follows from those differences?" The variation between people is not a nuisance to be controlled out of an experiment; it is the object of study.
Three linked ideas follow from that assumption.
First, the area assumes that differences between people are real, stable enough to study, and often quantifiable. It takes seriously the project of measuring the ways people differ — a person's level of a trait, their intelligence, the severity of a symptom, the pattern of their language — and of placing individuals on dimensions or into categories. This measurement ambition is what gives the area its close relationship with psychometrics (the science of psychological measurement) and with the classification of mental disorders. Gould's study is, at its heart, a critique of a particular attempt at such measurement (the WWI army intelligence tests), and it matters precisely because how we measure a difference profoundly shapes what we conclude about it.
Second, the area often adopts an idiographic emphasis — a focus on the individual case in its full, particular detail — as a complement or corrective to the nomothetic search for general laws that dominates much of the rest of psychology. An idiographic study seeks to understand one person (or a small number) in depth, on the assumption that the richness of a single case can reveal things that averaging across many people would obscure. Freud's study of Little Hans is the area's clearest idiographic case: an intensive, months-long analysis of one child's phobia, pursued in far more depth than any large-sample survey could allow. The area does not reject the nomothetic outright — psychometric and group-comparison studies (Baron-Cohen, Hancock) are broadly nomothetic — but it is unusually hospitable to the idiographic, and the tension between the two is one of the area's defining themes.
Third, the area assumes that studying differences is useful — that identifying, measuring and understanding the ways people differ has real applications, especially in the understanding and treatment of atypical individuals. Understanding why some people develop disorders informs how we might help them; measuring differences fairly matters because measurements get used — to diagnose, to select, to include or exclude. This applied dimension is double-edged: the area's usefulness is exactly what makes some of its research socially sensitive, because measurements and diagnoses of individuals and groups can be misused, as Gould's study shows in devastating detail.
It is worth stressing what the individual differences area characteristically does not privilege. It does not reach first for the situation and the presence of others (that is the social area); it does not centre the universal information-processing steps of memory or attention that are assumed to work the same in everyone (that is the cognitive area); it does not focus principally on how behaviour changes with age across the lifespan (that is the developmental area); and it does not treat brain regions, hormones or genes as the primary object of study (that is the biological area), though it may draw on biology to explain a difference. The individual differences area's distinctive move is to place human variation itself — the disorder, the trait, the intelligence, the atypical profile — at the centre of the enquiry.
The area in one sentence. The individual differences area explains behaviour by focusing on how and why people differ from one another — in personality, intelligence and mental health — often studying the individual case in depth, and treating human variation as the phenomenon to be understood rather than as error to be averaged away.
Because the area wants to understand how individuals differ, and often to understand the atypical individual in particular, it favours methods that either probe a single case in depth or measure differences between people systematically. Four method types recur across the four individual-differences core studies, and knowing which study used which is a reliable AO1 discriminator.
| Method | Individual-differences core study using it | Why the area favours it | Characteristic weakness |
|---|---|---|---|
| Case study (in-depth study of one individual) | Freud (1909) — Little Hans's phobia analysed over months | Captures the richness and complexity of a single atypical case in a way group studies cannot | Not generalisable; heavy reliance on subjective interpretation |
| Quasi-experiment / group comparison (pre-existing groups compared on a measure) | Baron-Cohen et al. (1997) — adults with autism vs controls on the Eyes Task | Compares how different types of people perform, revealing group differences | No manipulation of the IV, so causal inference is limited; possible confounds |
| Psychometric testing (standardised measurement of a trait or ability) | Gould (1982) — his subject is the WWI psychometric IQ tests | Places individuals on a dimension; enables comparison and diagnosis | Validity and cultural fairness of the test are always in question |
| Analysis of language / self-report data (systematic coding of what people produce) | Hancock et al. (2011) — text analysis of murderers' speech | Reveals subtle, measurable differences in how individuals express themselves | Data may be affected by context (e.g. speaking to gain parole); interpretation needed |
Two features of this methodological profile deserve comment. The area is unusually willing to study the single case in depth, accepting a loss of generalisability in return for a richness of understanding that large samples cannot provide. That is what gives Freud's study of Little Hans its extraordinary texture — a child's dreams, fantasies, questions and fears documented over months — and it is also what generates the study's central controversy, because a conclusion drawn from one case, and interpreted through a single theoretical lens, is precariously placed. The area's great methodological strength (depth) and one of its gravest liabilities (non-generalisability, subjectivity) spring from the same root.
The area also makes heavy use of measurement and classification: it does not merely describe differences but tries to quantify them — an Eyes Task score out of a maximum, a percentage of a particular word-type in a psychopath's speech, an intelligence score on an army test. This measurement focus is a genuine strength, because it makes differences objective and comparable rather than impressionistic. But it carries a permanent hazard that Gould's study exposes with unusual clarity: a measurement is only as good as its validity, and a psychometric test that is culturally biased, or that measures something other than what it claims, will nonetheless look objective — a spurious precision that can be, and historically was, put to appalling use. The area's commitment to measurement is thus simultaneously its scientific credential and the source of its deepest ethical dangers.
No feature distinguishes the individual differences area more sharply, or supplies more AO3 material, than its characteristic idiographic emphasis and the tension this creates with the nomothetic approach that dominates much of the rest of psychology. The distinction is worth stating precisely because examiners reward candidates who can use it accurately.
The nomothetic approach (from the Greek nomos, law) seeks general laws that apply to people in general. It studies large samples, averages across individuals, and produces conclusions of the form "in situation X, people tend to do Y". Most of the social, cognitive and biological studies in the course are broadly nomothetic: Milgram wants to know how people respond to authority, not how one particular man does.
The idiographic approach (from the Greek idios, own or private) seeks to understand the individual case in its full particularity. It studies one person, or a few, in depth, on the assumption that a rich, complete account of a single case can reveal what averaging would hide. Freud's study of Little Hans is the paradigm idiographic study in the course: it is not trying to establish how children in general develop phobias by surveying thousands; it is trying to understand this child, this phobia, in exhaustive detail.
The individual differences area is unusually hospitable to the idiographic, but — and this is the crucial point for evaluation — it is not exclusively idiographic. Baron-Cohen's group comparison and Hancock's language analysis are broadly nomothetic in method (they compare groups and look for general patterns), even though their subject matter is individual differences. So the area is best characterised not as "the idiographic area" but as the area most willing to combine both approaches, and to take the idiographic case seriously where other areas would dismiss a single case as anecdote.
This creates a genuine trade-off that runs through the area's evaluation. The idiographic case study buys depth and richness at the cost of generalisability: what we learn about Little Hans may not hold for any other child. The nomothetic group study buys generalisability at the cost of depth: an average score on the Eyes Task tells us about the group but nothing about the inner life of any individual within it. Neither is simply "better"; they answer different questions. The mature evaluative position — and the one that lifts a Section B answer — is that a complete understanding of individual differences may require both: the idiographic to reveal the texture and possibility of a phenomenon, the nomothetic to establish how far it generalises. Recognising this complementarity, rather than treating the two as rivals with a winner, is the sophisticated move.
The tension in one sentence. The individual differences area characteristically embraces the idiographic study of the single case in depth (Freud) alongside nomothetic group comparison (Baron-Cohen, Hancock), trading generalisability for richness and richness for generalisability — and a full account of human difference arguably needs both.
The individual differences approach earns its place in the course because it addresses something the other areas tend to neglect, and because it does so with real-world consequence.
It takes human variation seriously as a phenomenon in its own right. The single most important contribution of the area is its insistence that the differences between people are not statistical noise but a central subject of psychology. Much research in the other areas treats individual variation as error variance to be controlled or averaged away; the individual differences area makes it the object of study. This is not a minor emphasis: without it, psychology would have little to say about why this person developed a disorder while their sibling did not, or about the atypical individuals — the person with autism, the psychopath — whom the area studies directly. A psychology that only described the "average" person would be radically incomplete.
Its idiographic case studies achieve unmatched depth. By studying a single case intensively, the area can capture the complexity, context and particularity of a phenomenon in a way no large-sample study can. Freud's analysis of Little Hans documents a child's evolving fears, fantasies and questions in extraordinary detail, generating rich hypotheses about the development of phobias that a questionnaire could never have produced. Case studies are especially valuable for rare or unusual conditions, where large samples are simply unavailable, and for generating theory that can later be tested nomothetically.
It has high real-world usefulness, especially in clinical and applied contexts. Understanding how and why individuals differ has direct application. Understanding the roots of a disorder informs how it might be treated; a valid measure of a difference (an ability, a symptom, a risk) can support diagnosis, selection or intervention. Baron-Cohen's development of a sensitive test of "theory of mind" has real clinical value in understanding the social difficulties that can accompany autism; Hancock's identification of measurable features of psychopathic language points toward applications in forensic assessment. The area's findings feed directly into clinical psychology, psychiatry, education and forensic practice.
It supplies psychology's critical conscience about measurement. Precisely because the area is committed to measuring differences, it has also produced psychology's most searching critiques of measurement. Gould's study is the outstanding example: by dissecting how the WWI army IQ tests were constructed, administered and interpreted, he shows how a measurement can be invalid, culturally biased and yet influential — a lesson of permanent value about the responsibilities that come with quantifying human differences. The area thus polices its own most dangerous tool, which is a genuine scientific virtue.
Balanced evaluation — the essence of AO3 — requires the limitations to be stated with equal force.
Findings from single cases may not generalise. The area's characteristic idiographic method purchases depth at the direct cost of generalisability. What Freud learned from Little Hans may be true only of Little Hans; a conclusion about one child's phobia cannot, by itself, establish anything about children in general. This is not a fatal objection — case studies are valuable for generating hypotheses and understanding the unusual — but it means idiographic findings must be treated as suggestive rather than established, and combined with nomothetic evidence before general claims are made.
The area's reliance on interpretation invites subjectivity and low reliability. Where a study depends on the researcher interpreting rich, qualitative material — as Freud interprets Little Hans's fears through the lens of the Oedipus complex — a different researcher, using a different theory, might reach a wholly different conclusion from the same data. This makes such interpretations hard to falsify and low in reliability, and it is the core of the long-standing critique of the psychodynamic method: the theory can seemingly accommodate any observation, which by the criterion of falsifiability weakens its claim to be scientific. Even the area's more measurement-based studies involve interpretive choices (what counts as a "correct" answer on the Eyes Task; which language features to code in Hancock) that can shape the result.
Its measurements can be invalid, biased, and dangerously misused. The area's ambition to measure human differences is also its greatest ethical hazard. A psychometric test carries an aura of objectivity that can mask cultural bias, low validity, or flawed administration — and because such measurements get used to classify, select and exclude real people, the consequences of a bad measurement can be severe. Gould's study is a sustained demonstration of exactly this: army tests that were culturally loaded and administered chaotically nonetheless produced numbers that were treated as measures of innate intelligence and marshalled in support of discriminatory immigration policy and eugenic argument. Measuring differences is not ethically neutral, and the area's history contains some of psychology's most damaging misuses of its own tools.
Much of the area's research is socially sensitive and ethically fraught. Studying disorders, intelligence and the characteristics of atypical or stigmatised individuals (people with autism; psychopaths; the groups whose intelligence Gould's tests purported to measure) is socially sensitive by its nature: the findings can affect how those individuals and groups are perceived, treated and labelled. Case studies of vulnerable individuals (a five-year-old child) raise questions of consent and of the child's interests; measurement of stigmatised groups risks reinforcing prejudice. This does not make the research wrong — it is often precisely the most valuable — but it demands unusual care, and the area's record is not unblemished.
| Strength | Corresponding limitation |
|---|---|
| Takes human variation seriously where others average it away | Findings from single cases may not generalise beyond them |
| Idiographic case studies achieve unmatched depth and richness | Reliance on interpretation invites subjectivity and low reliability |
| High real-world usefulness in clinical, forensic and applied settings | Measurements can be invalid, culturally biased and dangerously misused |
| Supplies psychology's critical conscience about measurement (Gould) | Much research is socially sensitive and ethically fraught |
It is worth pausing on why so many of these strengths and weaknesses come in pairs that mirror one another, because recognising the mirroring is what turns a list of evaluation points into an argument. The area's two defining commitments — to the idiographic depth of the single case and to the measurement of differences — are each the root of both a strength and a weakness. The idiographic case study is simultaneously the source of the area's unmatched richness (Freud's texture) and the source of its non-generalisability and subjectivity: the very features that let a case study probe one life so deeply — its focus on the particular, its reliance on interpretation — are what stop it speaking for anyone else. Likewise, the commitment to measurement is at once the area's scientific credential (objective, comparable data) and the wellspring of its gravest ethical danger (the misuse of biased tests): a measurement's aura of objectivity is exactly what makes an invalid measurement so hazardous, because its spurious precision lends authority to conclusions the data cannot support. A candidate who sees that the area's strengths and weaknesses are two faces of the same two commitments, rather than an arbitrary balance sheet, is writing at the level the AO3 marks reward.
There is a further, subtler point about the kind of knowledge the individual differences area produces, which connects directly to the debates. Because the area studies what makes individuals differ, and because those differences can be traced to some mixture of biology and experience, the area is a natural arena for the nature–nurture debate — indeed the four studies range across it, from Freud's developmental (largely nurture-and-drive) account of a phobia to the biological contribution to autism that frames Baron-Cohen's work. The area is equally a natural home for the reductionism–holism debate: a psychometric score reduces the vast complexity of a person's intelligence to a single number (Gould's target), whereas an idiographic case study resists such reduction and insists on the whole person in context (Freud's method). And because measuring and diagnosing individuals has real consequences, the area is unusually entangled with the debates on ethics and socially-sensitive research. Reading the area through the debates, rather than as a set of isolated findings, is itself an evaluative stance that strengthens a Section B answer — and it is developed fully in this course's perspectives-and-debates lesson.
Finally, the area's evaluation cannot be separated from its history, and here the individual differences area carries a heavier historical burden than any other. The measurement of human differences — of intelligence in particular — has a documented history of misuse, from the eugenics movement of the early twentieth century to the discriminatory immigration policies Gould dissects. This history is not incidental to the area; it is a permanent reminder of what is at stake when psychology quantifies the ways people differ. The specification's pairing of Gould's critique of biased measurement with Hancock's contemporary application of measurement to psychopathic language is, in effect, an invitation to ask whether the area has learned the lessons of its own past — whether modern measurement of individual differences is more careful, more valid and more ethically governed than the WWI tests Gould exposes. Reading the area historically, as a discipline still reckoning with the consequences of its measurement ambitions, is an evaluative stance that materially strengthens a Section B answer.
Section B rewards candidates who can articulate not just what the individual differences area is but how it contrasts with the others. The cleanest way to hold the five areas apart is by the question each one asks and the kind of cause or focus it privileges.
| Area | Core question | Kind of focus privileged | Illustrative core studies |
|---|---|---|---|
| Social | How do other people and the situation shape behaviour? | External — authority, groups, bystanders, roles, norms | Milgram; Piliavin; Bocchiaro; Levine |
| Cognitive | How do internal mental processes (memory, attention) work in general? | Internal information-processing, assumed common to all | Loftus & Palmer; Moray; Simons & Chabris |
| Developmental | How does behaviour change with age and experience? | Maturation and external influences over time | Bandura; Kohlberg; Chaney; Lee |
| Biological | How do the brain, body and genes cause behaviour? | Physiological — brain regions, plasticity, genetics | Sperry; Maguire; Blakemore & Cooper; Casey |
| Individual differences | How and why do people differ from one another? | The individual's unique profile — disorder, intelligence, personality | Freud; Baron-Cohen; Gould; Hancock |
The contrast is sharpest against the cognitive area, and drawing it out is instructive. Both areas are interested in the mind — but with opposite emphases. The cognitive area studies the mental processes assumed to be common to everyone: it wants to know how memory reconstructs or how attention filters in general, treating individual variation as error to be minimised. The individual differences area studies precisely the variation the cognitive area brackets out: not how theory of mind works in the typical adult, but how and why it differs between people (Baron-Cohen). The dividing line is one of aim — universal process versus individual variation — and keeping it clear is exactly what a Section B contrast question tests.
The contrast with the social area is a genuine opposition of direction. The social area locates the cause of behaviour outside the person, in the situation; the individual differences area locates the focus inside the person, in their unique profile. Take an act of harm: a social account might point to the legitimacy of an authority (Milgram); an individual-differences account might ask what it is about this person — their personality, their psychopathy (Hancock), a disorder — that distinguishes them. Both may be partly true, which is what the individual–situational debate is about, but they are genuinely different explanations and the exam expects you to keep them distinct.
The contrast with the biological area is subtler, because the individual differences area often draws on biology (a biological contribution to autism; the possibility of neural differences underlying psychopathy). The dividing line is one of emphasis and level: the biological area studies physiological mechanisms as such — brain regions, plasticity, genes — often as they operate in the species; the individual differences area is interested in biology only insofar as it helps explain why individuals differ, and it is equally happy to invoke experience, development and interpretation. A biological account of a phobia would look for the neural fear circuitry; Freud's individual-differences account looks to the child's particular developmental history and unconscious conflicts. The areas overlap in subject but differ in the level and kind of explanation they privilege.
The contrast with the developmental area turns on what is being tracked. Developmental psychology asks how a behaviour emerges and changes across the lifespan — its focus is time and change. The individual differences area asks how people differ from one another, which is largely a question about variation at a given time rather than change across time. The overlap is real — Freud's study of a child is both developmental (a stage-based account of childhood) and individual-differences (an idiographic case of one atypical child) — which is a useful reminder that areas are lenses, not walls, and that a single study can be legitimately viewed through more than one. Being able to say why Freud sits in the individual differences area (its idiographic focus on one atypical individual and the psychodynamic explanation of his difference) rather than the developmental area, while acknowledging the overlap, is exactly the kind of nuanced contrast that lifts a Section B answer.
Going further. The idiographic–nomothetic distinction that animates the individual differences area is a major theme in undergraduate personality and individual-differences psychology, where it connects to long-running debates about whether personality is best captured by universal trait dimensions (the nomothetic "Big Five") or by the unique organisation of the individual life (the idiographic tradition associated with Gordon Allport). Students considering psychology at university will meet this debate again in far more detail; the OCR individual differences area is an excellent early grounding in it.
The principles above are not abstractions; each is embodied in one of the four studies you will meet, organised under the area's two key themes.
Understanding disorders is illustrated by the pairing of Freud (1909) and Baron-Cohen et al. (1997). Freud, the classic study, is an intensive idiographic case study of a single five-year-old boy, "Little Hans", whose phobia of horses Freud interpreted — through the theory of the Oedipus complex, castration anxiety and displacement — as the outward expression of an unconscious conflict. Baron-Cohen, the contemporary study, is a nomothetic quasi-experiment using a psychometric "Reading the Mind in the Eyes" test to compare the theory-of-mind abilities of adults with autism or Asperger syndrome against control groups. Together they show the area's concern with understanding atypical individuals and disorders, and — strikingly — its willingness to pursue that understanding by opposite methods: the idiographic depth of a single case versus the nomothetic measurement of group differences.
Measuring differences is illustrated by Gould (1982) and Hancock et al. (2011). Gould's study is a review and critique of the WWI Yerkes army intelligence tests, exposing how a psychometric attempt to measure intelligence was culturally biased, chaotically administered, and then misused to support discriminatory conclusions. Hancock's study is a contemporary application of measurement, using text-analysis tools to identify the distinctive linguistic features of psychopaths' speech. Together they show the area's central concern with measuring the ways individuals differ — and its double-edged character: Gould warns of the dangers and abuses of measurement, while Hancock demonstrates measurement done in a modern, computational, arguably more careful key. The pairing invites exactly the historical question of whether the area has learned from its past.
Holding these four in mind as concrete cases makes the abstract principles examinable: whenever a question asks you to evaluate the individual differences area, you can anchor each general point in a specific study, which is exactly the move that lifts a Section B answer from assertion to evidenced argument.
"Discuss strengths and weaknesses of the individual differences area in psychology. Support your answer with examples from the individual-differences core studies. [15 marks]
How the marks are structured (own-words breakdown). On a 15-mark Section B "areas" essay of this kind, the assessment rewards three things in balance: AO1 — accurate knowledge of the individual differences area's defining assumptions and methods; AO2 — appropriate use of the individual-differences core studies as evidence for the points made; and AO3 — genuine evaluation that weighs strengths against weaknesses and reaches a supported judgement. A strong answer is not a list; it argues, using named studies as evidence, and arrives somewhere.
Mid-band response (7/15): The individual differences area says that people differ from each other and that psychology should study those differences, like differences in personality, intelligence and mental health. One strength is that it studies things in depth, for example Freud studied Little Hans in a lot of detail using a case study, which gave rich information about his phobia. Another strength is that it is useful, for example Baron-Cohen's Eyes Task can help understand people with autism. A weakness is that case studies like Freud's cannot be generalised because they are only about one person. Another weakness is that the measurements can be biased, like the IQ tests Gould criticised which were unfair on immigrants. Overall the individual differences area is useful and detailed but has problems with generalising and bias.
Examiner-style commentary: This earns solid AO1 (the core assumption is correctly stated) and makes appropriate use of Freud, Baron-Cohen and Gould for AO2. The evaluation is present but thin: the depth, usefulness, generalisability and bias points are correct yet asserted rather than developed, and the answer does not name the idiographic–nomothetic distinction or connect the bias point to socially-sensitive research. To reach the next band the answer needs to develop each evaluation into an argument — e.g. explaining that the same feature (the in-depth case study) produces both the richness and the non-generalisability — and to reference the reductionism–holism or nature–nurture debate rather than treating the area's evaluation as a flat balance sheet.
Stronger response (11/15): The defining assumption of the individual differences area is that people differ from one another in psychologically important, often measurable ways — in personality, intelligence and mental health — and that understanding those differences is a central task of psychology, in contrast to areas that average variation away. A major strength is its willingness to study the individual case in depth: Freud's (1909) idiographic case study of Little Hans documents a single child's phobia with a richness no large-sample study could match, generating detailed hypotheses about how phobias develop. The area is also highly useful in applied settings — Baron-Cohen et al.'s (1997) Eyes Task provides a sensitive measure with real clinical value in understanding the social difficulties associated with autism. However, these strengths carry costs. The very depth of the case study is bought at the price of generalisability: what is true of Little Hans need not hold for any other child, and Freud's interpretation through the Oedipus complex is subjective and hard to falsify. The area's commitment to measurement is likewise double-edged: Gould (1982) shows how the culturally biased WWI army IQ tests, despite their aura of objectivity, were misused to support discriminatory immigration policy — a socially-sensitive misuse of the area's own tools. Overall the area is indispensable for taking human variation seriously, but its idiographic depth and its measurements each bring characteristic dangers.
Examiner-style commentary: AO1 is precise and AO2 draws on three of the four studies with genuine relevance. The AO3 is now argued, not listed — it links strength to limitation (depth and its price; measurement and its misuse) and correctly frames Gould's material as socially sensitive. To reach top-band the answer needs a sharper sustained judgement: rather than alternating points, it could organise around a thesis (that the area's power and its problems share two roots — idiographic depth and the measurement of differences) and could bring in Hancock to complete the coverage and pose the historical question of whether measurement has since improved.
Top-band response (14/15): The individual differences area's defining claim — that human variation in personality, intelligence and mental health is itself the phenomenon worth explaining, rather than error to be averaged away — is rooted in two commitments, the idiographic study of the single case and the measurement of differences, and a balanced evaluation is best organised around the fact that each commitment is the source of both a strength and a weakness. The idiographic commitment delivers unmatched depth: Freud's (1909) case study of Little Hans probes one child's phobia — his fears, dreams and questions — with a richness no survey could reach, and case studies remain invaluable for rare conditions and for generating theory. But that same commitment costs generalisability and invites subjectivity: Freud's conclusions may hold only for Little Hans, and his interpretation through the Oedipus complex is famously unfalsifiable, since the theory can seemingly absorb any observation. The measurement commitment is equally double-edged. It grounds the area's usefulness and scientific credentials — Baron-Cohen et al.'s (1997) Eyes Task is a sensitive, quantified measure of theory of mind with genuine clinical value, and Hancock et al.'s (2011) computational analysis of psychopaths' language shows measurement in a modern, arguably more careful key. Yet the aura of objectivity that measurement confers is exactly what makes invalid measurement dangerous: Gould (1982) dissects how the culturally biased, chaotically administered WWI army IQ tests were nonetheless treated as measures of innate intelligence and marshalled in support of discriminatory immigration policy and eugenic argument — the area's own tool turned to socially-sensitive misuse. The pairing of Gould's critique with Hancock's application poses the area's defining historical question: whether the measurement of differences has become more valid and more ethically governed than its past. The judgement, then, is that the individual differences area is indispensable for restoring human variation to the centre of psychology and for its clinical and forensic usefulness, but it is best understood as an area whose two great strengths — depth and measurement — are inseparable from its two great hazards — non-generalisable subjectivity and the misuse of biased measures; its findings are most secure when idiographic and nomothetic evidence are combined and when its measurements are held to strict standards of validity and ethical use.
Examiner-style commentary: Full-band AO1/AO2/AO3. The answer is organised around a genuine thesis (that the area's two commitments each yield a paired strength and weakness), deploys all four core studies as evidence, distinguishes the idiographic from the nomothetic accurately, and correctly frames Gould's material through the socially-sensitive-research lens while posing the historical question via the Gould–Hancock pairing. Crucially it reaches a sustained, qualified judgement rather than a summary — the discriminator between a strong answer and a top-band one on this question type. The single mark withheld reflects room to name the reductionism–holism debate explicitly when contrasting the psychometric score with the idiographic case.
This content is aligned with the OCR A-Level Psychology (H567) specification.