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Direct linkMcNulty, Richard J.; Floyd, Randy G. – Psychology in the Schools, 2021
This study examined the factor structure of the Detroit Tests of Learning Abilities, Fifth Edition (DTLA-5) using principal axis factoring, multiple factor extraction criteria, and the Schmid-Leiman orthogonalization procedures not utilized by test publishers. Results suggest that the publisher's six-factor structure model was over factored.…
Descriptors: Aptitude Tests, Cognitive Ability, Factor Structure, Factor Analysis
Norfolk, Philip A.; Farmer, Ryan L.; Floyd, Randy G.; Woods, Isaac L.; Hawkins, Haley K.; Irby, Sarah M. – Journal of Psychoeducational Assessment, 2015
The representativeness, recency, and size of norm samples strongly influence the accuracy of inferences drawn from their scores. Inadequate norm samples may lead to inflated or deflated scores for individuals and poorer prediction of developmental and academic outcomes. The purpose of this study was to apply Kranzler and Floyd's method for…
Descriptors: Intelligence Tests, Psychometrics, Sample Size, Norm Referenced Tests
Irby, Sarah M.; Floyd, Randy G. – Canadian Journal of School Psychology, 2013
The Wechsler Abbreviated Scale of Intelligence, Second Edition (WASI-II; Wechsler, 2011) is a brief intelligence test designed for individuals aged 6 through 90 years. It is a revision of the Wechsler Abbreviated Scale of Intelligence (WASI; Wechsler, 1999). During revision, there were three goals: enhancing the link between the Wechsler…
Descriptors: Test Reviews, Intelligence Tests, Psychometrics, Item Analysis
Floyd, Randy G.; Shands, Elizabeth I.; Alfonso, Vincent C.; Phillips, Jessica F.; Autry, Beth K.; Mosteller, Jessica A.; Skinner, Mary; Irby, Sarah – Journal of Applied School Psychology, 2015
Adaptive behavior scales are vital in assessing children and adolescents who experience a range of disabling conditions in school settings. This article presents the results of an evaluation of the design characteristics, norming, scale characteristics, reliability and validity evidence, and bias identification studies supporting 14…
Descriptors: Behavior Rating Scales, Psychometrics, Daily Living Skills, Evaluation Criteria
