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Author: Pearson, P. David
Resulting in 1 citation.
1. Park, Hye-Sook
Pearson, P. David
Reckase, Mark D.
Assessing the Effect of Cohort, Gender, and Race on Differential Item Functioning (DIF) in an Adaptive Test Designed for Multi-Age Groups
Reading Psychology 26, 1 (January-March 2005): 81-101
Cohort(s): Children of the NLSY79
Publisher: Routledge ==> Taylor & Francis (1998)
Keyword(s): Peabody Individual Achievement Test (PIAT- Reading); Racial Differences; Test Scores/Test theory/IRT; Tests and Testing

Differential item functioning (DIF) statistics were computed using items from the Peabody Individual Achievement Test (PIAT)-Reading Comprehension subtest for children of the same age group (ages 7 through 12 respectively). The pattern of observed DIF items was determined by comparing each cohort across age groups. Differences related to race and gender were also identified within each cohort. Characteristics of DIF items were identified based on sentence length, vocabulary frequency, and density of a sentence. DIF items were more frequently associated with short sentences than with long sentences. This study explored the potential limitation in the longitudinal use of items in an adaptive test.
Bibliography Citation
Park, Hye-Sook, P. David Pearson and Mark D. Reckase. "Assessing the Effect of Cohort, Gender, and Race on Differential Item Functioning (DIF) in an Adaptive Test Designed for Multi-Age Groups." Reading Psychology 26, 1 (January-March 2005): 81-101.