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within-subjects design

an experimental design in which the effects of treatments are seen through the comparison of scores of the same participant observed under all the treatment conditions. For example, teachers may want to give a pre- and postcourse survey of skills and attitudes to gauge how much both changed as a result of the course. Such a design could be analyzed with a dependent-samples t test, a within-subjects analysis of variance, or an analysis of covariance. Also called related-measures design; repeated measures design; within-groups design. Compare between-subjects design.

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Psychology term of the day

June 19th 2024



n. in infants, lack of psychomotor response or failure to gain weight or produce purposeful behavior, often thought to be a response to separation from mothers and subsequent institutionalization. See also reactive attachment disorder.