PSCH 343 Study Guide - Final Guide: Repeated Measures Design, Analysis Of Variance, Statistical Significance
Document Summary
Principle of parsimony- the belief that explanations of phenomena and events should remain simple until the simple explanations are no longer valid: simple possible one that can yield a valid experiment. Why is random assignment important in an experiment: random assignment is concerned with control procedures in the experiment, whereas random selection influences the generality of the results. Independent groups: groups of participants formed by random assignment, no ties or links to the participants in the other group; they are independent of each other. Distinguish between a between-subject"s comparison and a within-subjects comparison: between-subjects: refers to a contrast between groups of participants who were randomly assigned to groups. What does it mean when an experiment is confounded: an experiment in which an extraneous variable varies systematically with the iv, which makes drawing a cause-and-effect relation impossible. In a confounded experiment there is no way to determine which conclusion kpis appropriate.
