Illness A recent study 13 examining the link between schizophrenia and culture i
ID: 3352440 • Letter: I
Question
Illness A recent study13 examining the link between schizophrenia and culture interviewed 60 people who had been diagnosed with schizophrenia and who heard voices in their heads. The participants were evenly split between the US, India, and Ghana, and each was interviewed to determine whether the voices were mostly negative, mostly neutral, or mostly positive. The results are shown in Table 2.11. “Learned cultural expectations about the nature of mind and self” appear to influence how the voices are perceived.
US
India
Ghana
Total
Negative
14
4
2
20
Neutral
6
3
2
11
Positive
0
13
16
29
Total
20
20
20
60
(a) What proportion of all the participants felt that the voices are mostly negative?
(b) What proportion of all US participants felt that the voices are mostly negative?
(c) What proportion of non-US participants felt that the voices are mostly negative?
(d) What proportion of participants hearing positive voices are from the US?
(e) Does culture appear to be associated with how voices are perceived by people with schizophrenia?
US
India
Ghana
Total
Negative
14
4
2
20
Neutral
6
3
2
11
Positive
0
13
16
29
Total
20
20
20
60
Explanation / Answer
Solution
(a) P(voices are mostly negative) = 20/60 = 1/3 = 33.33%
(b) P(US participants - mostly negative voices) = 14/60 = 23.33%
(c) P(non US participants - mostly negatiive voices) = 6/60 = 10%
(d) P(positive voice from US) = 0