PSY 2174 Chapter Notes - Chapter 5: Design Of Experiments, Confounding, Dependent And Independent Variables
9 Apr 2020
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Study in which an independent variable is manipulated. There are always alternative interpretations of findings: Main features (example: people learn a list of 20 words better after consuming caffeine): Find willing participants and inform them that they might consume some caffeine if they continue. Divide the participants into two groups at random. Administer caffeine to one group and none to the other. Present the words in the list exactly the same way and with the same timing for both groups (standardized procedure) Thank the participants and explain the intent of the experiment. Design type that involves a researcher observing events without manipulating variables; includes surveys and analysis of existing data. Variable that is manipulated in an experiment and is assumed to have a direct effect on the dependent variable. Variable that is assumed to be directly affected by changes in the independent variable of an experiment.
