genetic and neural

Question 1

Twin studies data?

Answer 1

Christiansen studied 3500 twins and found a concordance rate of 35% for MZ and 13% for DZ.

Question 2

What did Tiihonen et all suggest?

Answer 2

That 2 genes are associated with crime: MAOA (regulated seretonin) and CDH13 (substance abuse). Using the diathesis stress model, we see this in SZ with psychological and physical triggers.

Question 3

What is APD?

Answer 3

Antisocial personality disorder is in many offenders. Raine studied the brains of criminals and found reduced activity in the prefrontal cortex (regulated emotion). They have’switches’ that can be turned off and on.

Question 4

2 weaknesses?

Answer 4

• Issues with twin studies as it assumes a similar environment.
• Biologically detemrinsic and says people can’t change.

Question 5

One strength?

Answer 5

There’s support for the diathesis stress model.