Document Type

Book Chapter

Publication Date

4-25-2025

Keywords

between-subjects design, data analysis, data collection, experiment, within-subjects design

Disciplines

Developmental Psychology

Abstract

The concept of an experiment has undergone many changes in psychology's relatively short existence, and its essential features are still debated. Psychologists agree that it involves (a) systematically observing and recording phenomena; (b) explicitly describing the conditions under which the observations occurred, and (c) analyzing the resulting data to look for meaningful relations. The major area of disagreement is whether manipulation of phenomena is required.

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