PSY 235 Chapter Notes - Chapter 5: Angelman Syndrome, Twin, Twin Study
Document Summary
Direct genetic effects: natural selection and functionalism, natural selection. The process by which adaptive characteristics emerge over generations. Includes behavioral tendencies and emotions- personality : evolutionary personality theory. Modern application of darwin"s ideas to individual differences in personality. Attention is focused on the function of a characteristic in survival: example: angelman syndrome. A congenital disorder caused by a defect in chromosome 15. Demonstrates how genetic factors set before birth can dramatically influence later personality: example: williams syndrome. Longitudinal studies suggest that characteristics tend to remain stable over time as children mature: four basic aspects of temperament. Emotionality: easily aroused (vs calm and stable) Sociability: approaches and enjoys others (vs aloof) Impulsivity: aggressive and cold (vs conscientious and friendly) Sexual identity and homosexuality: twin studies have shown that homosexuality has a genetic influence, however, there appear to be some environmental influences as well. Mediated effects of biology: effects through environmental toxins, poisoning.
