+ has good empirical evidence from experiments, post mortem, PET CAT scans
+ reliable evidence that the degree of risk increases with the relatedness.
+ evidence for the dopamine hypothesis is strong in the sense that it is higly valid as it shows the brain activity of schizophrenics during tasks.
+ prospective studies which shed a light on the direction of the causality.
- no research for relevant ans specific genes that influence the onset of schizophrenia.
- reductionist because thery reduce a complex behave like schizophrenia down to something reletively small.
- cannot establish cause and effect
deterministic because it says that sufferers have no control over the onset.
+ considers past experiences in the onset of schizophrenia
+ allowa the treatments to treat underlying problems in schizophrenics
+ useful in explaining the roles of surroundings in terms of families.
- mostly based on assumptions and has no empirical evidence
- retrospective data tends to be used
- parents are being blamed
- poeple with schizophrenia don't necessarily behave like children