PSYC 3100 Chapter 11: Chapter 11.docx

• School: University of Guelph
• Department: Psychology
• Course: PSYC 3100
• Professor: Hank Davis

Document Summary

Agreement that abnormal behavior has a biological basis. Prominent approach to abnormal behavior (ab) is called the medical model, which considers it to be like any other disease. Labeling ab as a disease assumes understanding of its causes and treatment- a theory, which is lacking. Classification of behavioral disorder= dsm-iv( diagnostic and statistical manual of mental disorders, 4th edition, apa) An evolutionary perspective on the causes of mental illness: some may not be disorders but defenses. Fever: some are side effects of genes with fitness benefits. Sociopathy: absence or malfunctioning of a particular module. Defective colour vision: mismatch between the current environment and the one that prevailed over much of human evolution. Post-traumatic stress disorder: some disorders represent the extremes of the distribution of polygenic traits. Clinical depression some disorders may reflect more than one cause. 15% of u. s vietnam veterans suffered from ptsd. Railway spine term used to describe people who had survived railway accidents.