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- All Subjects: Assessment
- Creators: Abry, Tashia
- Creators: Balles, John R
Description
Standardized intelligence tests are some of the most widely used tests by psychologists. Of these, clinicians most frequently use the Wechsler scales of intelligence. The most recent version of this test for children is the Wechsler Intelligence Scale for Children - Fourth Edition (WISC-IV); given the multiple test revisions that have occurred with the WISC, it is essential to address evidence regarding the structural validity of the test; specifically, that the internal structure of the test corresponds with the structure of the theoretical construct being measured. The current study is the first to investigate the factor structure of the WISC-IV across time for the same individuals. Factorial invariance of the WISC-IV was investigated using a group of 352 students eligible for psychoeducational evaluations tested, on average, 2.8 years apart. One research question was addressed: Does the structure of the WISC-IV remain invariant for the same individuals across time? Using structural equation modeling methods for a four-factor oblique model of the WISC-IV, this study found invariance at the configural and weak levels and partial invariance at the strong and strict levels. This indicated that the overall factor structure remained the same at test and retest with equal precision of the factor loadings at both time points. Three subtest intercepts (BD, CD, and SI) were not equivalent across test and retest; additionally, four subtest error variances (BD, CD, SI, and SS) were not equivalent across test and retest. These results indicate that the WISC-IV measures the same constructs equally well across time, and differences in an individual's cognitive profile can be safely interpreted as reflecting change in the underlying construct across time rather than variations in the test itself. This allows clinicians to be more confident in interpretation of changes in the overall cognitive profile of individual's across time. However, this study's results did not indicate that an individual's test scores should be compared across time. Overall, it was concluded that there is partial measurement invariance of the WISC-IV across time, with invariance of all factor loadings, invariance of all but three intercepts, and invariance of all but four item error variances.
ContributorsRicherson, Lindsay Patricia (Author) / Watkins, Marley W. (Thesis advisor) / Balles, John R (Thesis advisor) / Lynch, Christa S (Committee member) / Arizona State University (Publisher)
Created2012
Description
This two-study investigation examined the social behavior competencies of a sample of students ages 8 to 18 who identified themselves as either bullies or non-bullies based on ratings of items on a comprehensive behavior rating scale. Specifically, the purpose of Study 1 was to establish criteria using the Social Skills Improvement System – Student Rating Scale (SSIS-S) to identify students from a nationally representative standardization sample who displayed high frequencies of bullying behaviors. The social behavior ratings for these self-identified bullies were then compared with all other students in the national sample and analyzed to determine differences among various domains of social skills and problem behaviors. In Study 2, the same students’ social behaviors were rated by adult informants to determine if there was added value in including parents and teachers in the assessment of the self-identified bullies. Finally, the extent of concurrent agreement was examined for all students among the teachers, parents, and students’ ratings of social skills and problem behavior domains. Study 1 revealed that self-identified bullies are not a homogeneous group. The main findings from Study 2 showed parents and teachers may add to the overall predictive validity of the student self-report assessment, but not the accuracy of classifying the students as bullies. Study 2 showed differences and similarities exist across the ratings provided by each rater. The relative value of including adult reports in the self-assessment likely lies in the reported differences from each rater, as they provide a more complete social behavior profile for each student. These findings are discussed in terms of existing research and theories regarding children and youths’ bullying behavior. Limitations and recommendations for future research conclude the report.
ContributorsRupp, Shannon Leanna (Author) / Elliott, Stephen N. (Thesis advisor) / Kochenderfer-Ladd, Becky (Committee member) / Eisenberg, Nancy (Committee member) / Abry, Tashia (Committee member) / Arizona State University (Publisher)
Created2020