After-class versus in-class data collection: validity issues.

A study was conducted to examine character differences between students who volunteer to participate in psychological studies in class and those who volunteer to participate after class. Data were drawn from 566 male and female college students from introductory psychology courses who completed the...

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Bibliographic Details

Published in:	Journal of Psychology Vol. 130; pp. 635 - 645
Main Authors:	Spirrison, Charles L., Gordy, Constance C., Henley, Tracy B.
Format:	Article
Published:	Taylor & Francis Ltd November 1996
Subjects:	Experimental design Volunteers Human research subjects Psychological research
Online Access:	View this record in EBSCOhost