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Approaches in Psychology

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Question 74

In a psychiatric genetics study, researchers investigated 150 pairs of monozygotic (identical) twins to determine the concordance of Major Depressive Disorder (MDD). The researchers recorded whether both twins in a pair shared the same clinical diagnosis (either both diagnosed with MDD, or both free of MDD) or had different diagnoses (one twin diagnosed with MDD and the other free of MDD).

Table 1: Concordance of Major Depressive Disorder (MDD) diagnoses in 150 monozygotic twin pairs

Twin pairs sharing the same MDD diagnosisTwin pairs with different MDD diagnoses
5793

Use your knowledge of genotype and phenotype to explain the data in Table 1.

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Approaches in Psychology Questions

  1. A Level
  2. /Psychology
  3. /Approaches in Psychology

Practise AQA A Level Psychology Approaches in Psychology with exam-style questions for A Level Psychology. 248 questions covering Learning approaches, Cognitive approach, Biological approach, Psychodynamic approach (A-level only), Humanistic Psychology (A-level only), and Comparison of approaches (A-level only), matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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