biological answers of schizophrenia Essay

neurological explanations of schizophrenia

Biological Answers of Schizophrenia (24 marks)

The initially consideration is definitely genetics as a factor of schizophrenia, because twin research by Gottesman (1991) has shown the risk of developing the illness to become 48% for monozygotic twins, and 17% for dizygotic twins. This is certainly supported by Paul (2004) whom calculated pooled research prior to 2001 and located concordance rates of 7. 4% and forty five. 4% intended for dizygotic and monozygotic twins, respectively. A criticism of this is that early studies could have been done at a time when the DSM was fewer reliable and for that reason diagnosis is probably not accurate. While there is support for any genetic link, the regularite rates tend not to match the percentage of genes shared by each type of twin while monozygotic mixed twins should be 100% likely to develop schizophrenia, and dizygotic 50%. This suggests that there are elements involved, instead of being simply biological.

In the same way, adoption studies provide a approach to investigate the importance of inherited genes without the participator being affected by their environment, even though ideally similar twins need to be reared aside and this is incredibly rare. Kety (1975) recommended that when the environments were matched, prices of schizophrenia were substantially higher for adoptees that had schizophrenic parents, than adoptees with biological parents without schizophrenia. This is backed with Tieran (2000), who performed a study in Finland with 164 adoptees whose neurological mother was diagnosed with schizophrenia. He identified that 6th. 4% (11) were also clinically diagnosed compared to 2% (4) in the control group. A review of this kind of study might suggest that it is invalid since we don't know of the standard of contact with the mother following adoption, or perhaps the age of adoption, meaning behaviours may have been discovered from their mothers and are not completely natural. Cultural differences may be involved, as in Denmark and USA adoptive mom and dad are informed of parental genetic conditions, which will poses moral implications. The child could...