The authors present the results of a validity and reliability study for the Group Leadership Effectiveness Scale (GLES). Seven consecutive semesters of data were gathered for this investigation, with 1 semester of data being reported and analyzed here. The results of the data support both validity and reliability for this instrument. A longitudinal study collecting data for an extended period of time is suggested for future study.
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Demask et al. (2009) studied this question.
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