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Lecture 2

PSYC 241 Lecture 2: PSYC 241 – WEEK 2 (Lecture)

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Simon Fraser University
PSYC 241
Shannon Zaitsoff

1 PSYC 241 WEEK 2 (Lecture) THEORETICAL PERSPECTIVES ON ABNORMAL BEHAVIOUR o On midterm, generally wont ask who developed ___ o One of the strength of the DSM is that its atheoretical (so it doesnt matter which paradigm or model the practitioners stem from) Goals of a Theoretical Perspective Explain etiology o What causes the disorder o Ex. a biological perspective would point to which areas of the brain you should look at, the genes behind, etc. Identify factors maintaining disorders o What led them to the disorder in the first place (ex: the causal effect of a teen drinking could be peerpressure) could be different than what maintains it (ex: dependency or symptoms of withdrawal, or family struggles could maintain it) Predict course of disorders Design effective treatments Historical Perspective In the past, theories explaining abnormal psychology have emphasized biological or environmental causes o The nature vs. nurture controversy Now moving away from single factor theories and towards interactionist explanations Models Theories 1. Biological Models 2. Psychosocial Theories 3. Putting it all together: Integrative Theories Biological Models Damage to the brain Neurotransmitters Autonomic Nervous System (ANS) Endocrine System Genetics Structural Damage to the Brain Some disorders have been linked to brain damage Damage can occur through: o Direct head injuries Ex: concussions
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