PSY 310 Chapter Notes - Chapter 6: Nuisance Variable, Dependent And Independent Variables, Confounding
12 Feb 2019
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Conducting a good experiment i: variables and controls. Variable - an event or behavior that can assume two or more values. Operational definition - defining the independent, dependent, and extraneous variables in terms of the operations needed to produce them. Researchers should define their variables so that other scientists can replicate the research by following the definitions given for the variables involved. Physiological iv - a physiological state of the participant manipulated by the experimenter. Experience iv - manipulation of the amount of type of training or learning. Stimulus or environmental iv - an aspect of the environment manipulated by the experimenter. Participant characteristics - aspects of the participant, such as age, sex, or personality traits, which are treated as if they are ivs, although they are not. Extraneous variables are those factors that can have an unintended influence on the results of our experiment. An extraneous variable can unintentionally cause groups to move closer together or farther apart.
