Contemporary Study - Brendgen (2005)

Question 1

Brenden (2005) - APFC

Answer 1

A - The extent to which social and physical aggression are influenced by genetics and the environment
P - Secondary data, 234 twins from QNTS, Teachers rated the twins social and physical aggression on a 3 point scale
Peers also did
F - Physical explained by genetics (MZ Physical aggression similarity twice as high as DZ), Social more by the environment (DZ)
C - Genetics predispose people to physical aggression
Children quickly learn that physical aggression is socially unacceptable and turn to social aggression.

Question 2

GRAVE

Answer 2

G - V large sample (234 pairs)
R - Inter rater reliability // ratings between teachers and peers v similar
A - If SA is caused by the environment it can be prevented at early stages
V - Equal environments assumption - twins won’t have the same environment, could be treated differetnyl by teachers, peers, parents
E - Presumptive consent from parents // Judging of classmates could have ethical issues e.g. causing fights