genetic theories

Question 1

Lange

Answer 1

GENETIC- MZ/DZ TWINS
-MZ twins showed a higher concordance rate than DZ twins for criminal behaviour, 10/13 sets of MZ twins had criminal convictions, only 2 sets of DZ twins had criminal convictions

Question 2

Hutchings and Mednick

Answer 2

adopted

• 14000 adopted children
• found high proportion of boys had criminal convictions had biological parents with convictions

Question 3

Mednick et al

Answer 3

adopted

• no relationship of criminal convictions and adoptive parents and children
• did find that no. of criminal convictions of biological parents and their offspring

Question 4

Christiansen

Answer 4

genetic

• 3586 twin pairs
• Male MZ twins- 35% criminal convictions
• female MZ - 21%
• male DZ- 21%
• female DZ- 8%