trait definition
internal stable psych disposition that determines difference between people
3 pre-scientific theories of individual differences
Francis Galton’s 4 contributions
Alfred Binet contribution
developed first intelligence test (for kids)
William Stern contribution
developed IQ
mental age/chronological age x 100
Charles Spearman contribution
Raymond Cattell contribution
Hans Eysenck’s contribution
Robert McCrae + Costa contribution
Big 5 personality test
behavioural genetics definition
study of bio basis of individual differences
genotype definition
genetic code in DNA that is inherited from parents
phenotype definition
expression of genes in behavioural traits that can be measured
genome definition
full genetic info inherited by organism from parents
Human genome project 2.0
focuses on understanding epigenome
epigenome definition
how lifestyle, diet + environment effect gene expression
CRISPR definition
gene editing can allow us to correct genetic diseases
heritability estimate definition
stat indicator of influence of genetic factors on individual differences of behavioural traits
genetics correlation on cognitive abilities
*highest similarities between mono + same environment
*raised apart mono still higher correlation than fraternal
*lowest correlation in adoptee vs parents
genetics and personality
genetic influence on behaviours:
genetic interplay theory / conclusion
example of genetic interplay
temperament definition
temperament as subset of personality