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Gibbons, Robert D.; Bock, R. Darrell; Hedeker, Donald; Weiss, David J.; Segawa, Eisuke; Bhaumik, Dulal K.; Kupfer, David J.; Frank, Ellen; Grochocinski, Victoria J.; Stover, Angela – Applied Psychological Measurement, 2007
A plausible factorial structure for many types of psychological and educational tests exhibits a general factor and one or more group or method factors. This structure can be represented by a bifactor model. The bifactor structure results from the constraint that each item has a nonzero loading on the primary dimension and, at most, one of the…
Descriptors: Factor Analysis, Item Response Theory, Computation, Factor Structure
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Cassidy, Deborah J.; Hestenes, Linda L.; Hegde, Archana; Hestenes, Stephen; Mims, Sharon – Early Childhood Research Quarterly, 2005
The purpose of the current study was to examine the psychometric properties of the Early Childhood Environment Rating Scale-Revised (ECERS-R) with a large sample (1313 classrooms). We explored both the seven subscales and the possibility of fewer distinct aspects of quality being measured by the scale. The large sample size allowed both…
Descriptors: Psychometrics, Factor Analysis, Factor Structure, Preschool Children
Maine Department of Education, 2003
This document, a companion to the "LAS Guide Principles and Criteria for the Adoption of Local Assessment Systems," [ED484135] presents results that are intended to provide Maine's school administrative units with an option for selecting sample performance indicators to be assessed through the Local Assessment System to meet the…
Descriptors: State Standards, Standard Setting, State Programs, Classification