PSYC 3604 Lecture Notes - Lecture 3: Psychophysiology, Longitudinal Study, Mental Disorder
31 Jan 2017
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Psyc 3604 research methods in clinical psychology. *all content belongs to christopher motz & where cited in lecture slides* Correlational studies (observation & measurement w/o manipulation) Useful when your theory = unclear & you need additional info in order to formulate clear theory/hypothesis. Limitations: lack of generalizability to others (external validity, isolating treatment from extra-treatment events (internal validity) Group comparison study (case-control design: ppl diagnosed as having particular mental disorder compared w/ controls. Cross-sectional studies observe subjects at 1 point in time. Longitudinal studies: behaviours of same subject over extended period of time, high-risk design. Epidemiology: study of frequency of disorders within specific population. Prevalence: percentage of pop. that has disorder at particular time. Incidence: # of new cases of disorder within given time period. Characteristics of scientific method minimizing effects of expectations: Demand characteristics subjects respond according to experimenter"s expectations. Experimenter effects knowledge of experimental condition that can bias experimenter"s observation of behavioural results.
