PSYCH 1X03 Lecture Notes - Lecture 12: Confounding, Blind Experiment, Paradigm Shift
14 Sep 2016
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Document Summary
Paradigm shift: a dramatic change in our way of thinking. Anecdotal evidence: evidence gathered by others or self experience. Uses experiment to measure the effect of one variable on another. Control groups: will not receive a manipulation of the independent variable. Experimental groups: will receive a manipulation of the independent variable. Participants should be as similar as possible, thus a difference in the dependent variable will be likely due to the independent variable. Within subjects design: a way to guarantee similarity, tests the same subject repeatedly while the independent variable is manipulated, minimizes subject differences, problems. Between subjects design: one group recives experimental manipulation the other acts as a control group, confounding variable: systematic difference between participants that is present before manipulation. Confounds the ability to determine that differences in the dependent variable are caused by manipulation. Population: general group we are trying to learn about. Sample: selected members of the population that we actually collect data from.
