PSYC 201W Lecture Notes - Lecture 6: Confounding, Dependent And Independent Variables, Caffeine
5 Feb 2019
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Psyc 201 - lecture 6 - experimental research: single-factor designs. Example - 1 iv with 2 levels (e. g. caffeine: present, absent) Example - scores on test of attention. Enables researcher to rule out plausible alternative explanations. Enables researchers to conclude that independet variable is cause of any observed hange in behavior. Choose types of dependent variables taht will be measured & how & when they will be measured. Enables effects of independent variables to be assessed. Regulate other aspects of research environment, including manner in which prticipants exposed to various conditions in experiment. 3 key criteria to be met to enhance researchers" ability to draw causal conclusions. Researchers control temporal order by exposing participants to x before. If y only changes when x presented first, then temporal order criterion has been met. Researchers control plausible alternative explanations by holding other variables constant that could potentially affect y. Confounding variable - factor covarying w/ iv.
