Culture and prevalence of disorders
IB Psychology· Health and well-being· 14 min read
1. Core concept
Reported rates of a disorder like depression differ markedly between cultures and populations, but the differences are not simply differences in how many people are ill. They can reflect real protective or risk factors (for example tighter social support in more collectivist settings) AND differences in how distress is expressed, labelled and reported — in some cultures depression is voiced as physical symptoms or is more stigmatised, lowering reported rates. So a low prevalence figure can mean genuinely less depression, or under-reporting and different diagnostic criteria. Cultures also differ in their whole approach to mental health — what counts as a disorder and how it is treated.
2. Key studies
IB Psychology answers must be supported by named studies. Learn these to cite as evidence:
Chiao and Blizinsky (2010)
Collectivistic cultures were more likely to carry the short 5-HTTLPR allele yet showed lower depression prevalence, suggesting collectivism can buffer genetically vulnerable populations. — Shows a cross-cultural prevalence difference arising from a gene-culture interaction, not genes or culture alone.
Furnham and Malik (1994)
British and Asian women differed in beliefs about depression; Asian women reported less depression and used more collectivistic explanations, suggesting reporting bias. — Shows an apparent prevalence difference can be an artefact of how depression is understood and reported across cultures.
3. Evaluation (AO3)
Strength — exposes hidden factors — Comparing populations reveals influences a single-culture study hides (protective collectivism; culture-bound expression), improving the validity of explanations.
Limitation — confounded measurement — Cross-cultural prevalence data are confounded by non-equivalent diagnostic criteria and reporting norms, so a 'difference' may be measurement bias rather than a true difference in rates.
4. Scope
5. Common Pitfalls
Wrong move:
Assuming a disorder's Western prevalence rates and diagnostic criteria apply everywhere, so lower reported rates mean the disorder is genuinely rarer.
Why:
A frequently penalised misconception in IB Psychology exams.
Correct move:
Lower reported prevalence can reflect reporting bias, stigma, somatic symptom expression or different criteria — not true absence — and culture also shapes how disorders are treated. Weigh measurement before concluding a real difference.
Going deeper
- Cultural dimensionsindividualism/collectivism is a cultural dimension (SOC_4).
- Prevalence of health problemsprevalence of non-disorder health problems is the parallel card (HWB_5).
- Biological explanation of depressionthe genetic vulnerability that culture buffers is the biological explanation (HWB_1).