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Peer reviewed
Direct linkCamparo, James; Camparo, Lorinda B.; Wagner, Judith T. – Applied Psychological Measurement, 2010
Peer nominations are used widely in psychological and sociological research to examine intergroup dynamics, even though this assessment tool suffers from thorny methodological problems: Gender, ethnic, age, and trait compositions vary across subsamples, subjects differ in the number of nominations they make, and the issue of sampling without…
Descriptors: Group Dynamics, Intergroup Relations, Peer Relationship, Social Attitudes
Dorans, Neil J.; Liu, Jinghua; Hammond, Shelby – Applied Psychological Measurement, 2008
This exploratory study was built on research spanning three decades. Petersen, Marco, and Stewart (1982) conducted a major empirical investigation of the efficacy of different equating methods. The studies reported in Dorans (1990) examined how different equating methods performed across samples selected in different ways. Recent population…
Descriptors: Test Format, Equated Scores, Sampling, Evaluation Methods
Petersen, Nancy S. – Applied Psychological Measurement, 2008
This article discusses the five studies included in this issue. Each article addressed the same topic, population invariance of equating. They all used data from major standardized testing programs, and they all used essentially the same statistics to evaluate their results, namely, the root mean square difference and root expected mean square…
Descriptors: Testing Programs, Standardized Tests, Equated Scores, Evaluation Methods
