PSYC 201W Chapter Notes -Egroups, Randomized Controlled Trial, Random Assignment
9 Dec 2014
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Psych 201 chapter 7: control techniques in experimental research. When the influence of an extraneous variable is different for the various groups. If groups are equivalent on every variable except one, then that one variable is the cause of the difference between the groups. Control technique that equates groups of participants by ensuring every member an equal chance of being assigned to any group. Random assignment: randomly assigning a sample of individuals to a specific number of comparison groups. Matching: using any of a variety of techniques for equating participants on one or more variables, matching variable: the extraneous variable used in matching. Individual matching: a technique in which each participant is matched with another participant on selected variables -> aka: subject matching. Control during the experiment: you must treat the different groups in the same way during the conduct of the experiment, except for administration of the different variables.
