Cognitive Connie

Let's explore Genetics & Behaviour

Explore how genes, heritability, epigenetics, and evolutionary history shape human behaviour and individual differences — from twin study findings and gene–environment interactions to the adaptive logic of the evolved mind.

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Behavioural Genetics

Why do people differ so dramatically from one another — in personality, intelligence, mental health, and behaviour — even when raised in apparently similar environments? Behavioural genetics is the scientific discipline that attempts to answer this question by disentangling the contributions of genetic differences, shared family environment, and unique individual experience to individual variation.

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01

Behavioural Genetics

8 questions · ~12 min · Intermediate

HeritabilityTwin studiesConcordance rateShared environmentNon-shared environmentGene-environment correlation
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02

Epigenetics & Gene–Environment Interaction

7 questions · ~11 min · Advanced

EpigeneticsDNA methylationDiathesis-stress modelDifferential susceptibilityCaspi et al.
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03

Evolutionary Psychology

8 questions · ~12 min · Intermediate

Natural selectionEEAAdaptationsInclusive fitnessParental investmentSexual selection
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SubjectsGenetics & Behaviour
Behavioural Genetics