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Petscher, Yaacov; Pfeiffer, Steven I. – Assessment for Effective Intervention, 2020
The authors evaluated measurement-level, factor-level, item-level, and scale-level revisions to the "Gifted Rating Scales-School Form" (GRS-S). Measurement-level considerations tested the extent to which treating the Likert-type scale rating as categorical or continuous produced different fit across unidimensional, correlated trait, and…
Descriptors: Psychometrics, Academically Gifted, Rating Scales, Factor Structure
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Rosado, Javier I.; Pfeiffer, Steven; Petscher, Yaacov – Gifted Education International, 2015
The challenge of correctly identifying gifted students is a critical issue. Gifted education in Puerto Rico is marked by insufficient support and a lack of appropriate identification methods. This study examined the reliability and validity of a Spanish translation of the "Gifted Rating Scales-School Form" (GRS) with a sample of 618…
Descriptors: Identification, Gifted, Puerto Ricans, Grades (Scholastic)
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Koon, Sharon; Petscher, Yaacov; Hughes, John – Regional Educational Laboratory Southeast, 2015
The purpose of this study was to examine the extent to which the measures that make up each of the three separate accountability indices of school performance in South Carolina could be used to create an overall, reliable index of school performance. Data from public elementary, middle, and high schools in 2012/13 were used in confirmatory factor…
Descriptors: Alternative Assessment, Accountability, Educational Indicators, Performance Factors
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Reed, Deborah K.; Vaughn, Sharon; Petscher, Yaacov – Learning Disability Quarterly, 2012
In this study, the authors examined the validity of a holistically scored retell within a confirmatory factor analysis framework by comparing the fit of a three-factor model of reading with the data from a diverse sample of seventh and eighth graders. The final model demonstrated adequate fit, [chi][squared](32) = 97.316; comparative fit index =…
Descriptors: Factor Analysis, Validity, Reading Comprehension, Grade 8
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Petscher, Yaacov; Connor, Carol McDonald; Al Otaiba, Stephanie – Assessment for Effective Intervention, 2012
This study investigated the psychometrics of the "Diagnostic Evaluation of Language Variation-Screening Test" (DELV-S) test using confirmatory factor analysis, item response theory, and differential item functioning (DIF). Responses from 1,764 students in kindergarten through second grade were used in the study, with results indicating…
Descriptors: Diagnostic Tests, Screening Tests, Language Variation, Psychometrics
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Li, Huijun; Pfeiffer, Steven I.; Petscher, Yaacov; Kumtepe, Alper T.; Mo, Guofang – Gifted Child Quarterly, 2008
The Gifted Rating Scales-School Form (GRS-S), a teacher-completed rating scale, is designed to identify five types of giftedness and motivation. This study examines the reliability and validity of a Chinese-translated version of the GRS-S with a sample of Chinese elementary and middle school students (N = 499). The Chinese GRS-S was found to have…
Descriptors: Academically Gifted, Test Validity, Predictive Validity, Rating Scales