contemporary Brendgen

Question 1

monozygotic and dizygotic twins

Answer 1

identical and non identical

Question 2

aim

Answer 2

inv agg in mz and dz to discover extent yp which social and physical agg can be explained by genetics and enviro inf
overlap betw social and physical agg is exp by 1type affecting other

Question 3

procedure

Answer 3

234 pairs of twins born betw 95 to 98
collected data reg from 5months old to 6yrs
kindergarted tr rated social and physical agg 3point scale
childreb rated based on description by nominating photo(3)

Question 4

findings

Answer 4

physical agg lead to social not vv
agg tendencies change as children grow due to dvt of lang and cog skills
learn socially acceptable ways to show agg

Question 5

conclusion

Answer 5

some genetic factors predispose some children to be agg eg poor self control + social due to enviro eg parental behaviour
directionality suggests children predisposed physically agg
but adopt socially agg methods to socially acceptable

Question 6

+ve

Answer 6

I ratings from multiple sources
J large diff would highlight potential bias
E inter rater reliability and mst of agg were good(IV)
valid conc abt inf genes play on agg

Question 7

+ve

Answer 7

I real life app>effective intervention to reduce agg>
J workshops to act less aggressively and proscocial
Blocks DVT in social agg
E targeting early easy rather than habit where child is resistant to change+ prevents anti social and criminals

Question 8

-ve

Answer 8

I generalising impossible
J age group highly spec> not app to other children
E sample not representing and finding less useful
Social agg not always nature