POL SCI 3 Lecture Notes - Lecture 11: Dependent And Independent Variables, Blind Experiment, Get Out The Vote
7 Oct 2016
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X internal validity problems (5) (1) induced state failure (2) compound x (3) unsuccessful administration of x (4) diffusion of x (5) intrasession history. Subjects iv problems (6) (1) too small nj (2) mentality (3) demand effects (4) compensatory rivalry (5) resentful demoralization (6) spillover effects. Researchers iv problems (3) (1) experimenter bias (2) compensatory equalization (3) experimental artifacts. Subjects figure out hypothesis alter behavior (1) subjects provide researchers with supportive evidence (2) subjects provide unsupportive evidence, counter to researcher"s hypothesis. Solution 2: run experiment blind: subjects don"t know whether they are in treatment or control group, helpful because if you try to help or hurt the researcher you don"t what to do, placebo group! Compensatory rivalry: don"t get x, try extra hard to compensate underestimate of x. Resentful demoralization: don"t get x, become resentful exaggerate effect of x. Solution: make study blind: can"t always do blind studies.
