BLOA Genetics and human behaviour

5 important questions on BLOA Genetics and human behaviour

Genetic inheritance vs. evolution

The difference is that while genetic inheritance has an influence on individual behaviour, evolution affects the behaviour of the species.
  • natural selection - adaptive purpose in the survival of species

Genetic vulnerability model

People are genetically predisposed to a certain behaviour, which is then triggered environmentally by life event.

Ex. Sometimes seen with depression and schizophrenia

What are the main issues with which behavioural genetics is concerned?


The extent to which our behaviour is affected by our genes, our environment, and the exact nature of the interaction between the two.
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What are the two main criticisms of the findings of twin and adoption studies?

The equal environment assumption, and that selective placement can affect the validity of the results.

What is one strength of Plomin & Petrill's (1997) research, in terms of the longitudinal aspect of it?


It is cross-cultural.

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