biological explanations to schizophrenia

Question 1

What does biological explanations not deny the importance of

Answer 1

psychological factors that play in the onset of this disorder

Question 2

What is the diathesis stress relationship at work with

Answer 2

biological predisposition for schizophrenia

Question 3

what causes you to develop biological predisposition for schizophrenia

Answer 3

significant psychological stressors are present

Question 4

What are the different types of biological explanations of schizophrenia

Answer 4

Diathesis stress model
genetic factors
combination of genes

Question 5

Can schizophrenia be hereditary or not

Answer 5

Yes it can

Question 6

Who’s more likely to develop schizophrenia an individual who’s family has the disorder or the one who doesn’t

Answer 6

The individual who’s family has schizophrenia

Question 7

Is there a specific gene that causes schizophrenia

Answer 7

No it’s more likely to be multiple which causes vulnerability to schizophrenia

Question 8

If you have the schizophrenic gene does that mean you’ll get schizophrenia

Answer 8

not necessarily

Question 9

What did Gottesman and Shields 1991 find

Answer 9

individuals who have schizophrenic relatives are effected more often then non-biological relatives

Question 10

What increases the risk of genetic schizophrenia

Answer 10

Being related genetically

Question 11

What was Gottesman and shields concordance rates when studying children with 2 schizophrenic parents

Answer 11

46%

Question 12

What was Gottesman and shields concordance rates when studying children with 1 schizophrenic parent

Answer 12

13% and siblings

Question 13

What was Gottesman and shields concordance rates when studying children with a sibling with schizophrenia

Answer 13

9%

Question 14

Which twins are genetically Mz or DZ

Answer 14

MZ

Question 15

What does concordance rate mean

Answer 15

the. probability of one twin having the disorder if the other already has it expressed as a percentage

Question 16

What did Joseph calculate in 2004

Answer 16

pooled data for schizophrenia twin studies shows a concordance rate of 40.4 Mz twins and 7.4 for Dz twins

Question 17

Do blind studies tend to have a higher or lower concordance rate for MZ twins

Answer 17

Lower

Question 18

Do the blind studies have a higher rate of schizophrenia for Mz twins and DZ twins

Answer 18

Mz twins still have a higher rate

Question 19

What type of individuals are used in adoption studies

Answer 19

genetically related individuals who’ve been reared apart

Question 20

Who carried out the most methodology study

Answer 20

Tienari et al 2000 in Finland

Question 21

how many adoptees were used in Tienari’s study

Answer 21

164 with schizophrenic mothers

Question 22

how many of the 164 adoptees had schizophrenia

Answer 22

11

Question 23

How many control adoptees did Tienari use

Answer 23

197

Question 24

How many control adoptiees had schizophrenia

Answer 24

4

Question 25

What were Tienari’s finidngs

Answer 25

genetic liability to schizophrenia had been decisively confirmed

Question 26

What are the strengths of biological explanations

Answer 26

genetic factors make some people much more vulnerable than others

Question 27

What are the weaknesses of biological factors

Answer 27

• adoptees may be selectively placed with families
• MZ twins treated more similarly than DZ twins
• explained by family backgrounds and experiences rather than genetics