PSYC 2030 Study Guide - Midterm Guide: Statistical Conclusion Validity, Repeated Measures Design, Internal Validity
2 Feb 2017
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Document Summary
Establishing independent variables need to have levels for comparison. Field experiments: experiments that take place in the field. Situational variables: features in the environment that participants might encounter. Task variables: give groups different kinds of problems to solve. Instructional variables: manipulated by telling different groups to perform a particular task in different ways. Experimental group: used as a label for the first situation in which treatment is present. Control group: group in which treatment is withheld ideally is identical to experimental. Extraneous variables: uncontrolled factor that are not of interest to the researcher but might influence the behavior being studied if not controlled. Confound: any uncontrolled extraneous variable that covaries with the independent variable and could provide an alternative explanation of the results. Dependent variable: describe those behaviors that are the measured outcomes of experiments. Ceiling effect: occurs when the average scores for the groups in the study are so high that no difference can be determined between conditions.
