3.1 genetic influences on behaviour Flashcards
nature
gene influences
nuture
environmental influences
genes are in every cell of our body
inherited traits of our ancestors
hold DNA
genotype
the specific combination of genes that form an individuals DNA
Phenotype
the physical or behavioural traits we possess
behavioural genomics
the field devoted to investigating how a person’s genetic code influences their psychological traits
(HUMAN GENOME PROJECT)
human genome project
provided a complete list of the genes found in humans and their distribution on human chromosomes
behavioural genetics
field devoted to investigating the extent that genes vs a persons environment contribute to particular psychological traits (twin studies) -monozygotic-identical -dizygotic- fraternal (adoption studies) -biological parents share genes -adoptive parents share environment
heritability
a number b/w o and 1.0 that represent the proportion of differences in a trait across individuals that is caused by genetic influences
heritability of depression and anxiety for 3 year olds is
.76
humans are both diff and similar to one another because of our
genes
theory of evolution
charles darwin found where are genes come from
evolutionary psychology
a field aimed at revealing how the traits that we inherited from our ancestors (and that we share with one another) control our thoughts and behaviours
-reproductively significant behaviour
intrasexual selection
members of the same sex compete to mate with the other sex
causes physical differences b/w males and females of a species
intersexual selection
-attract with dance, beauty, skills
selecting mates with certain traits
