PSC 200 Lecture Notes - Lecture 6: Rudolf Carnap, Stanley Milgram, Internal Validity
7 Dec 2017
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Allow the researcher to control exposure to an experimental variable and . Direct test of the impact of iv on dv to all other variables. Researcher controls when/how the stimulus is applied to the subject. Recruitment, may or may not be random. Ensures treatment/control groups are nearly identical on average: age, sex, race, Responses establish the baselines - should be about the same as the treatment group. This means that we we have strong confidence in the causal inferences we draw. Causal order - researcher controls stimulus received. Spuriousness/eliminate zs - randomization should take care of this. Establishing causality between iv and dv = internal validity. We cannot be very confident that the results of our analysis applies the broader pop. The context, especially labv settings, are very artificial our iv. In political science we can"t manipulate variables (e. g. war, gender) Experiments designs can carry special ethical challenges. Stanley milgram (negative reinforcement - and conformity in psychology)
