PSYC 330 Lecture Notes - Lecture 2: Positron Emission Tomography, Naturalistic Observation
27 Jan 2017
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Because different methods ask different questions and yield different answers. Limited by recruitment pool (i. e. college students), lack of controls (depends on type of. Interview-based, lack of scientific controls (no normal comparison), biased by. Observation-based (observer-biased), lack of controls, real behavior vs interpretation. Surveys information provided in surveys? honesty, drug free, clearly worded questions, memory aids (e. g. tlfb - alcohol timeline. > how do the differences between patients and non-patients affect the. Major examples: the national household survey, drug abuse warning maximizing accuracy in surveys (i. e. reliability and validity) written assurance of confidentiality, a setting that encourages. National survey on drug use and health (nsduh) Goal: establish overall prevalence fo use in lifetime, past year, and past month for a variety of substances. Prevalence: general occurrence of an event, the % of the population affected by the event , overall rate of cases, both old and new. Incidence: rate of new cases that develop in an interval of time.
