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Unformatted text preview: Ch. 5 Etiology of Alcohol Dependence • Public Health Model o Agent: alcohol o Host: individual’s genetic endowment and psychological make-up o Environment: family, community, and culture • The Agent : Alcohol – Effects inviting use o Depressant drug o Diminution of inhibition to relaxation § Alcohol alters mood states § Increased psychomotor activity o Socially accepted and widely available o Abuse potential § Of the substance § The likelihood of abuse § Factors that increase abuse potential- Speed of action § Quick disappearance of the effect- Strength of euphoria- Duration of euphoria (likelihood of readministration)- Learned reliability and dependence • The Host: Individual – Genetic Factors o Nature versus nurture § Nature = genetic make-up (high tolerance) § Nurture = individual’s circumstances § Dilemma: separating these factors o Prenatal, experiential, genetic o Twin adoption studies by Donald Goodwin § Nature > nurture § 4 times greater § Scandinavia o Studies of nonalcoholic blood relatives o Genetic marker studies o Familial versus nonfamilial alcohol dependence: So what? o Findings on role of heredity § Epidemiological studies- Alcoholism runs in families § More alcoholism co-occurrence in identical twins than fraternal twins § Studies of step-siblings- Alcoholic “home” vs. alcoholic parent § Animal studies • The Host: Environment – Personality and Psychological Makeup...
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This note was uploaded on 10/17/2010 for the course HLTH 208 taught by Professor Joanstivers during the Fall '09 term at Tompkins Cortland Community College.
- Fall '09