PSYC 201W Chapter Notes - Chapter 11: Regression Analysis, Random Assignment, Measuring Instrument
20 Jul 2014
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In contrast, a quasi experiment = has some features of an experiment, but lacks key aspects of experimental control: like true experiments quasi experiments examine the effects of treatments, participants are exposed to treatment and dvs are measured, treatment refers to intervention, event, task or stimulus to which participants are exposed to, major ways in which quasi experiments lacks true experimental control, ivs: the experimenter may not have control over the content or deign of the treatment, when it occurs, or whom it affects, dvs: the experimenter may not have control over the choice of dvs or how, when, and for whom they are measured, extraneous environmental variables: experimenters typically have little if any control over extraneous environmental events during the study, participant characteristics: treatment and control groups cannot be assumed to be equivalent at the start of the study because random assignment either is not used or is inadequate.
