PSYC 2030 Chapter Notes - Chapter 6: Random Assignment, Longitudinal Study, Demand Characteristics
25 Jan 2017
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Any independent variable must have a minimum of 2 levels. Between-subjects design any experimental design in which different groups of participants serve in the different conditions of the study. Within-subjects design/ repeated-measured design any experimental design in which the same participants serve in each of the different conditions of the study: between-subjects designs (bsds): In the majority of cases, using a subject variable as the iv means that a btwn-subjects design will be used. This is dealt with by creating equivalent groups. Equivalent groups groups that are equal to each other in every important way except for the levels of the iv. The number of equivalent groups in a between-subjects study corresponds exactly to the number of different conditions in the study, with one group of participants tested in each condition. There are 2 ways of creating equivalent groups in a btwn-subjects experiment: random assignment:
