Explanations Of SZ

Question 0

Biological explanations: genetic factors

Answer 0

Gottesman and Shields - 42% concordance rate for hospitalisation and diagnosis for MZ twins, 9% for DZ twins

Question 1

Biological

Answer 1

1. Genetic factors

2. The dopamine hypothesis

Question 2

Evaluation of genetic factors

Answer 2

Joseph - MZ twins treated more similarly, encounter more similar environments and experience more identity confusion

Question 3

Biological explanations: the dopamine hypothesis

Answer 3

Comer - dopamine neurons play a key role in guiding attention, so disturbances may lead to attention, perception and thought problems

Question 4

Evaluation of dopamine hypothesis

Answer 4

Seeman - increase in dopamine receptor density between 60-110% in SZs

Question 5

Psychological

Answer 5

1. Cognitive

2. Socio-cultural - double bind theory, expressed emotion

Question 6

Psychological explanations: cognitive

Answer 6

Hemsley - central deficit in SZ due to disconnection between stored knowledge (schemas) and current sensory input

Question 7

Evaluation of cognitive

Answer 7

Robinson and Becker - neural circuits involving the limbic system involved in the inability to integrate moment to moment sensory inputs with stored memories, resulting distress leads to increase in dopamine

Question 8

Psychological explanations: socio-cultural: double bind theory

Answer 8

Bateson et al - double bind results in not developing a coherent construction of reality, which manifests itself in SZ symptoms

Question 9

Psychological: socio-cultural: expressed emotion

Answer 9

Linsezen et al - patient returning to a high EE environment 4x more likely to relapse

Question 10

Evaluation of socio-cultural

Answer 10

Tienari et al - children with SZ parents only more likely to become ill in situations where the adopted family was ‘disturbed’