Please enable JavaScript.
Coggle requires JavaScript to display documents.
Biological Approach - Coggle Diagram
Biological Approach
-
Twin Studies
Behaviour geneticists study whether behavioural characteristics, such as intelligence, personality, mental disorder, etc are inherited in the same way as physical characteristics.
Twin Studies - Used to determine the likelihood that certain traits have a genetic basis by comparing the concordance rates between pairs of twins. Example: The Jim Twins, grew up separately but both lived similar lives even apart. (Both had the same named wives, same career and same named sons).
Dizygotic: Two zygotes - these twins are formed when two separate eggs both become fertilised by different sperm cells.
Monozygotic: One zygote - these twins are formed when a fertilised cell splits into two and forms two separate embryos.
Genes
-
-
For instance, identical adult twins usually look slightly different because one has exercised more or one has dyed their hair etc. So despite having the same genes, the way identical twins' genes are expressed (the phenotype) is different.
-
The biological approach combines psychology and biology to provide physiological explanations for human behaviour. Biological psychology tried to explain how we think, feel, and behave in terms of physical factors within the body.