- they separate competing influences of nature and nurture
- if adopted children similar to adoptive parents - environment bigger influence
- if they’re similar to biological parents- genes
- research can separate influences
Counterpoint to adoption studies
- plomin- people create their own nurture by selecting environments that are appropriate for their nature.
- an aggressive child is likely to choose children with similar behaviours. Their chosen companions further influence their development (niche-picking)
Support for epigenetics
- nazis blocked off food distribution point of Dutch people - Dutch hunger winte
- women that became pregnant during that time had low weight babies that were 2X likely to develop schizophrenia
- life experiences of previous generations can leave markers that influence the health of their offspring