Human behaviour is INNATE and is influenced by INHERITANCE and GENES
Nurture
Behaviour is shaped by INTERACTION with the environment, people are born as 'BLANK SLATES'
Concordance
Degree to which people are SIMILAR on a particular TRAIT
Heritability
PROPORTION of DIFFERENCES between individuals in a population
Interactionist approach
All behaviour is controlled by some reasonable extent of both NATURE and NURTURE
Diathesis stress model
Behaviour is caused by a BIOLOGICAL VULNERABILITY which allows for certain genes to be EXPRESSED when also introduced to an ENVIRONMENTAL STRESSOR
Epigenetics
a CHANGE in GENETIC ACTIVITY without changing the genetic CODE. Is known as a LIFELONG INFLUENCE which can be passed down GENERATIONS
+ ADOPTION STUDIES
Adopted children shown to be similar to adoptive parents showed environmental influence, whereas children more similar to biological parents showed genetic influence. Rhee & Waldman meta-analysis showed 41% variance in aggression.
+ SUPPORT FOR EPIGENETICS
Nazi’s blocked distribution of food to the Dutch, leading to pregnant women giving birth to lower-than-average weight babies and where twice as likely to develop schizo.
+ REAL WORLD APPLICATION
Nestadt et al. OCD heritability rate of 0.76, leading to genetic counselling.
