Idiographic vs Nomothetic approaches

What is an idiographic approach?

focuses more on the individual case as a means of understanding behaviour, rather than attempting to formulate laws of behaviour

What is a nomothetic approach?

attempts to study human behaviour by developing general principles and universal laws of behaviour

What does the idiographic approach study?

Unique individuals, subjective experiences, motivations, and values

What research methods does the idiographic approach typically use?

Qualitative methods such as unstructured interviews and case studies

Does the idiographic approach aim to generalise findings?

No - it does not attempt to compare individuals to norms or generalise to wider populations

Which psychological approaches are linked to the idiographic perspective?

Humanistic and psychodynamic (little Hans) approaches

What does the nomothetic approach study?

Large groups to develop universal principles and benchmarks for comparison

What research methods does the nomothetic approach use?

Scientific methods: hypotheses, large samples, statistical analysis, objective measures

What does the nomothetic approach allow psychologists to do?

Predict and potentially control future behaviour based on general laws

Which approaches are linked to the nomothetic perspective?

Biological and behavioural approaches

How is the fact that the nomothetic approach often “loses the person” by reducing complex human experiences to numbers, averages and statistical trends a weakness?

because the nomothetic approach can oversimplify behaviour and ignore the subjective, real‑life experiences that are crucial for understanding and treating psychological disorders - lack depth and practical usefulness

Give an example of this weakness

For example, nomothetic research shows that around 1% of the population develops schizophrenia, but this statistic tells us nothing about the individual’s symptoms, trauma history, family dynamics or biological differences.

How is the fact that the idiographic approach acts as an important starting point for psychological theory by generating new hypotheses for nomothetic research a strength?

because it shows the idiographic approach contributes to scientific progress by sparking ideas that lead to broader general laws - not opposed to nomothetic approach but it complements it acting as “the pebble that starts an avalanche”

Give an example of this strength

For example, idiographic case studies often uncover unexpected patterns, mechanisms or variables that large‑scale surveys would miss.These detailed insights can then be transformed into testable hypotheses that nomothetic researchers examine using scientific methods and larger samples.

How is the fact that the nomothetic approach meets the scientific aims of psychology more effectively than the idiographic approach a strength?

because the nomothetic approach is more aligned with the features of science, whereas the idiographic approach struggles to achieve prediction and control due to its lack of standardisation

Give an example strength

For example, nomothetic research uses controlled, standardised procedures and statistical analysis to establish general laws that can predict and change future behaviour whereas idiographic methods rely heavily on qualitative self-report

How is the fact that the idiographic approach is highly time-consuming and often impractical a limitation?

because these methods require a large amount of time and resources, meaning only a small number of participants can be studied. As a result, findings are difficult to replicate and cannot easily be generalised to the wider population.

Give an example of this limitation

For example, case studies such as those conducted by Sigmund Freud involved detailed, long-term investigation of a single individual. - little Hans