The concurrent validity of three types of reading ability assessments was evaluated with 312 Australian primary-level children. Results suggest that the nature of the skills required for success in reading changes in the primary years, and that both teacher-based and test-based assessments concur more closely as children progress through the…

The Learning Disability Index (LDI) was validated by an examination for mean profiles and demographic characteristics of high and low LDI subsets of the standardization sample of the Wechsler Intelligence Scale for Children-Revised. The LDI continuum was found to measure Third Factor strengths/weaknesses as much as verbal-performance…

To identify classroom behaviors that differentiate primary-level students with learning disabilities (LD) from their nondisabled peers, two scales of 83 items each were devised and piloted. Two subscales and 18 individual items were found to discriminate students later classified as LD and those referred but not subsequently classified as LD.…

This article, which introduces six papers on the validity of distinguishing subgroups of children with language and learning disabilities based on discrepancies between academic attainment and intelligence test scores, comments on the papers' diversity in samples, measurement characteristics, and statistical approaches and outlines the studies'…

This study, involving 1,069 children (ages 9-14) referred for evaluation of learning disability, used 3 definitions of reading disability to provide criteria for 5 groups of children based on discrepancy between intelligence quotient (IQ) and academic achievement. Results question the validity of segregating children with reading deficiencies…

The validity of using an analysis of patterns of performance on the Meeting Street School Screening test versus using the composite cutoff score for identification of learning disabilities was analyzed for 1,377 first graders. Use of subtest scatter predicted later learning disability placements less accurately than chance. (Author/DB)

The construct validity of Boder's typology of dyslexia was investigated using quantified electroencephalography with 39 children (ages 7-11) during a reading task and at rest. Results supported beta frequency differences in anticipated regions by dyslexia subtype during the reading task. However, the direction of difference hypothesis was not…

Two studies addressing the clinical validity of discrepancy criteria for identification of children with developmental language disorders (DLD) are reported: one with 256 preschoolers clinically defined as DLD, and one with 363 8-year-old controls. Factors contributing to underidentification in Study 1 and overidentification in Study 2 are…

For successful classification of children with attention deficit-hyperactivity disorder, major issues include (1) the need for explicit studies of identification criteria; (2) the need for systematic sampling strategies; (3) development of hypothetical classifications; and (4) systematic assessment of reliability and validity of hypothetical…

Scores on the Holbrook Screening Battery, administered at age four, correctly predicted 89 percent of good readers and 75 percent of poor readers in a sample of 116 eighth graders. Characteristics differentiating good and poor readers included birth history, family history of learning disability, speech delay, and socioeconomic status. (Author/DB)

This study investigated diagnosis of learning problems in 177 boys (ages 6-13) with behavior problems. The standard score discrepancy method and standard score plus low achievement method were more likely to identify children with above-average intelligence quotients as learning disabled, whereas a regression approach identified learning…

This study of 640 twins with reading disability and 436 controls (mean age 12) examined external validity of the distinction between specific reading retardation and reading backwardness, in 3 domains: genetic etiology, sex ratio and clinical correlates, and neuropsychological profiles. There was no evidence of differential genetic etiology of the…

This study examined the utility of Wechsler's Deterioration Index, which compares short- and long-term memory capabilities. Three studies with a total of 120 children (ages 6-14) found that the index did not predict learning disability status but did distinguish children with attention deficit hyperactivity disorder from nondisabled children.…