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Cook, Bryan G.; Cook, Lysandra; Therrien, William J. – Learning Disabilities Research & Practice, 2018
Effect sizes are powerful tools for evaluating the practical importance of study findings that should be considered in the context of study characteristics such as participants, dependent variables, and comparison condition. In this article, we discuss how group-difference effect sizes are used to gauge the practical importance of group…
Descriptors: Effect Size, Learning Disabilities, Evaluation Methods, Groups
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Harrod, Wendy J.; Welch, Bridget K.; Kushkowski, Jeff – Current Research in Social Psychology, 2009
We examined trends in group research published in Social Psychology Quarterly (SPQ) from 1975 to 2005. We identified a total of 332 papers about groups published during the time period. Following Moreland, Hogg, and Hains (1994), we created an index of interest in groups by dividing the number of pages in papers about groups by the total number of…
Descriptors: Social Science Research, Groups, Research, Social Psychology
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Mullen, Brian; And Others – Journal of Social Psychology, 1991
Summarizes research comparing boundaries around larger and smaller groups. Finds that the perception of group boundary permatbility varies with group size. Reports a greater perceived distinction between the group and the individual passerby as group size increases. Describes the effects of varying group member proximity. Discusses implications…
Descriptors: Behavioral Science Research, Correlation, Group Dynamics, Group Structure