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Direct linkWatkins, Marley W.; Canivez, Gary L. – School Psychology Review, 2022
IQ tests provide numerous scores, but valid interpretation of those scores is dependent on how precisely each score reflects its intended construct and whether it provides unique information independent of other constructs. Thus, IQ scores must be evaluated for their reliability and dimensionality to determine their psychometric utility. As a…
Descriptors: Children, Intelligence Tests, Scores, Psychometrics
Fenollar-Cortés, Javier; Watkins, Marley W. – International Journal of School & Educational Psychology, 2019
The construct validity of the Spanish Version of the Wechsler Intelligence Scale for Children Fifth Edition (WISC-V[superscript Spain]) was investigated via confirmatory factor analysis. For all 15 subtests, the higher-order model preferred by Wechsler (2015b) contained five group factors but lacked discriminant validity. A bifactor model with…
Descriptors: Children, Intelligence Tests, Construct Validity, Test Reliability
Canivez, Gary L.; Watkins, Marley W.; McGill, Ryan J. – British Journal of Educational Psychology, 2019
Background: There is inadequate information regarding the factor structure of the Wechsler Intelligence Scale for Children -- Fifth UK Edition (WISC-V[superscript UK]; Wechsler, 2016a, Wechsler Intelligence Scale for Children-Fifth UK Edition, Harcourt Assessment, London, UK) to guide interpretation. Aims and methods: The WISC-V[superscript UK]…
Descriptors: Children, Intelligence Tests, Construct Validity, Factor Analysis
Fenollar-Cortés, Javier; López-Pinar, Carlos; Watkins, Marley W. – International Journal of School & Educational Psychology, 2019
The factorial structure of the WISC-IV for 859 Spanish children diagnosed with ADHD was examined. A bifactor model with the four factors first identified by Wechsler (2003a) was the best fit to the data. The Coding and Symbol Search subtests were particularly poor measures of "g" but relatively strong measures of the Processing Speed…
Descriptors: Foreign Countries, Intelligence Tests, Attention Deficit Hyperactivity Disorder, Test Validity
Watkins, Marley W.; Dombrowski, Stefan C.; Canivez, Gary L. – International Journal of School & Educational Psychology, 2018
The reliability and factorial validity of the Wechsler Intelligence Scale for Children--Fifth Edition: Canadian (WISC-V[superscript CDN]) was investigated. The higher-order model preferred by Wechsler (2014b) contained five group factors but lacked discriminant validity. An alternative bifactor model with four group factors and one general factor,…
Descriptors: Foreign Countries, Children, Intelligence Tests, Test Validity
Styck, Kara M.; Watkins, Marley W. – Journal of Learning Disabilities, 2016
The structural validity of the "Wechsler Intelligence Scale for Children-Fourth Edition" (WISC-IV) was evaluated using confirmatory factor analysis for a clinical sample of 1,537 students diagnosed with specific learning disabilities (SLD) by school psychologists in two large southwestern school districts. Results indicated that a…
Descriptors: Intelligence Tests, Children, Test Validity, Factor Analysis
Canivez, Gary L.; Watkins, Marley W.; James, Trevor; Good, Rebecca; James, Kate – British Journal of Educational Psychology, 2014
Background: Subtest and factor scores have typically provided little incremental predictive validity beyond the omnibus IQ score. Aims: This study examined the incremental validity of Wechsler Intelligence Scale for Children-Fourth UK Edition (WISC-IV[superscript UK]; Wechsler, 2004a, "Wechsler Intelligence Scale for Children-Fourth UK…
Descriptors: Foreign Countries, Intelligence Tests, Achievement Tests, Test Validity
Pendergast, Laura L.; Watkins, Marley W.; Canivez, Gary L. – Educational Psychology, 2014
Homework is a requirement for most school-age children, but research on the benefits and drawbacks of homework is limited by lack of psychometrically sound measurement of homework performance. This study examined the structural and convergent validity of scores from the newly developed Homework Performance Questionnaire -- Teacher Scale (HPQ-T).…
Descriptors: Homework, Measures (Individuals), Questionnaires, Validity
Watkins, Marley W.; Canivez, Gary L.; James, Trevor; James, Kate; Good, Rebecca – International Journal of School & Educational Psychology, 2013
Irish educational psychologists frequently use the Wechsler Intelligence Scale for Children-Fourth U.K. Edition (WISC-IV[superscript UK]) in clinical assessments of children with learning difficulties. Unfortunately, reliability and validity studies of the WISC-IV[superscript UK] have not yet been reported. This study examined the construct…
Descriptors: Construct Validity, Intelligence Tests, Children, Learning Disabilities
Watkins, Marley W. – Psychological Assessment, 2010
The structure of the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV; D. Wechsler, 2003a) was analyzed via confirmatory factor analysis among a national sample of 355 students referred for psychoeducational evaluation by 93 school psychologists from 35 states. The structure of the WISC-IV core battery was best represented by four…
Descriptors: Intelligence, School Psychologists, Factor Structure, Measures (Individuals)
Worrell, Frank C.; Watkins, Marley W.; Hall, Tracey E. – School Psychology International, 2008
In this study we examined the reliability and validity of global, mathematics and English self-concept scores from the Self-Description Questionnaire II (SDQ-II, Marsh, 1990b) in a random sample of 870 secondary school students in Trinidad and Tobago. The results provided strong evidence for the structural validity of the scores and yielded…
Descriptors: Academic Achievement, Validity, Self Concept Measures, Foreign Countries
Kotz, Kasey M.; Watkins, Marley W.; McDermott, Paul A. – School Psychology Review, 2008
Some researchers have argued that discrepant broad index scores invalidate IQs, but others have questioned the fundamental logic of that argument. To resolve this debate, the present study used a nationally representative sample of children (N = 1,200) who were matched individually for IQ. Children with significantly uneven broad index score…
Descriptors: Validity, Scores, Measures (Individuals), Intelligence
Download full textWatkins, Marley W.; Kuterbach, James M.; Morgan, Rebecca J.; FitzGerald, Julie L.; Neuhard, Rachel M.; Arthur, April G.; Bucknavage, Leah B. – Journal of Postsecondary Education and Disability, 2004
The recent influx of students with disabilities into postsecondary education has generated a concomitant increase in the demand for psychoeducational assessments that include a measure of cognitive ability, either to identify ability-achievement discrepancies or to rule out alternate or comorbid diagnoses. The most commonly recommended cognitive…
Descriptors: Validity, Disabilities, Factor Analysis, Psychometrics
