Biological Explanations

Question 1

Kety and Ingraham

Answer 1

In adoption studies, children were 10 times more likely to develop SZ

Question 2

Leo

Answer 2

Contradicts Kety and Ingraham as they had a small sample size and relatives identified were distant

Question 3

Seeman

Answer 3

There was an increase in do pine receptor density in post mortem of SZ.

Question 4

Wong

Answer 4

Supports Seeman as he found using PET scans, schizophrenics had double the density of dopamine sites.

Question 5

Randrup and Munkaurd

Answer 5

Rats were given amphetamines ( which increase dopamine activity) and caused them to act differently. However they returned to normal when given neuroleptics.

Question 6

Gottesman

Answer 6

When looking at twin studies. He found that
MZ - 48% conc
DZ - 17% conc
Parents who both had SZ - 46%