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…

When classifying the evidence base of practices, special education scholars typically appraise study quality to identify and exclude from consideration in their reviews unacceptable-quality studies that are likely biased and might bias review findings if included. However, study quality appraisals used in the process of identifying evidence-based…

The purpose of the present studies was to provide the means to create brief versions of instruments that can aid the diagnosis and classification of students with learning disabilities and comorbid disorders (e.g., attention-deficit/hyperactivity disorder). A sample of 1,108 students with and without a diagnosis of learning disabilities took part…

The comprehension section of the "Nelson-Denny Reading Test" (NDRT) is widely used to assess the reading comprehension skills of adolescents and adults in the United States. In this study, the authors explored the content validity of the NDRT Comprehension Test (Forms G and H) by asking university students (with and without at-risk…

The study compared the performance of 18 elementary-age students with learning disabilities on the Stanford-Binet Intelligence Scale: Fourth Edition and the Kaufman Assessment Battery for Children. Correlations (corrected for restriction of range) between the two instruments were strong. (Author/DB)

A learning disability index (LDI) based on a principal components analysis of the Weschler Intelligence Scale for Children-Revised normative data has been developed to depict verbal or nonverbal deficits on that test. Ss (N=1550) referred for educational difficulties returned mean scores on the LDI that were reliably different from expected scores…

Analyses indicated that the poorer performance of learning disabled students on the Woodcock-Johnson Tests of Cognitive Ability, as compared to their performance on the Wechsler Intelligence Scale for Children-Revised, can be explained in terms of the kinds of behaviors sampled in the Woodcock-Johnson battery. (Author)

Using 60 fourth- to seventh-grade learning disabled (LD), normal, and gifted students, the comparability of representations of self-concept across groups was analyzed for the Sears and Coopersmith inventories. (Author/SW)

The study involving 40 learning disabled children (6-8 years old) investigated the relationships between the various indexes of the McCarthy Scales of Children's Abilities (MSCA) and the scales of the Wechsler Intelligence Scale for Children-Revised (WISC-R), and the comparability between the MSCA General Cognitive Index and the WISC-R Full Scale…

Comparison of scores on the Kaufman Assessment Battery for Children and the Wechsler Intelligence Scale for Children-Revised of 67 students (ages 6-12) referred for possible learning disabilities found strong relationships among all the global standard scores on both instruments with different score patterns for those with severe disabilities.…

The concurrent validity of the Peabody Individual Achievement Test (PIAT) with 45 learning disabled children (7- to 12-years-old) was investigated using the California Achievement Test (CAT), the Wide Range Achievement Test (WRAT), and teacher ratings as criterion measures. (Author/DB)

To analyze differential diagnostic efficiency of the Revised Illinois Test of Psycholinguistic Abilities (a measure designed to assess strengths and weaknesses of learning disabled children), the Kelley procedure for estimating the proportion of differences in excess of chance was applied to the standardization data. (SBH)

The Pre-Reading-Screening Procedures and the Slingerland Screening Tests for Identifying Children with Specific Language Disability were administered to 1021 grade one to six students. Results indicated that reliability and validity coefficients were acceptable and that educational programing decisions could confidently be based on the test…