Kety

Question 1

Aim

Answer 1

to see if there’s a genetic basis of schizophrenia

Question 2

sample

Answer 2

34 patients from Denmark and 33 matched pairs controls (age, gender, age of adoption, social class)

Question 3

IV n DV

Answer 3

IV = SZ sufferers and control group with no history of MI
DV = prevalence of SZ - related MI from family members

Question 4

Method

Answer 4

• 463 adopted and bio families
• Danish family records used to locate both relatives
• 4 psychiatrists did blind test on each case to diagnose family members with SZ or not (removed 4 as couldn’t agree) - didn’t know if bio or adopted families
• identities revealed and assigned to adoptive family groups (IA or CA) and biological family groups (IB or CB)

Question 5

Results

Answer 5

Of 150 biological relatives in index cases 13 (8.7%) had diagnosis of SZ
Of 156 biological relatives in control cases 3 (1.9%) had diagnosis of SZ

Question 6

Weakness ETHNO

Answer 6

ethnocentric as all of SZ adoptees and families from one location and culture (Denmark) - results about genetics influences SZ might not apply to wider population