Lecture given before the Annual Conference and Course on Reading (23d, University of Pittsburgh, Pittsburgh, Pa., July 10-21, 1967).

Paper presented at Institute for Aural Rehabilitation (Denver, Colorado, July 1968).

The characteristics of a sample of school-aged children identified as learning disabled (LD) are described. They were characterized by distributions of single variables (e.g., discrepancy between IQ and achievement) and hierarchical classification creating subgroups within the LD sample. Fewer than half the sample exhibited characteristics…

This comprehensive guide to Logo as a programing language discusses its potential for advanced as well as introductory programing, lists and explains several computer programs, and provides evaluative reviews of eight Logo systems, including information on their developers, distributors, price, format, appropriate microcomputer, documentation,…

Assessed the prediction of learning proficiency on the basis of scores on the Wechsler Intelligence Scale for Children-Revised (WISC-R) with children (N=60) referred for learning disabilities. The WISC-R Coding accounted for over 50 percent of the variance in a controlled nonverbal paired associate learning measure and was the single best…

Problems with experimental research on mental retardation include: (1) difficulties with defining mental retardation; (2) neglect in demonstrating causal relationships; and (3) reliance on methodology not necessarily appropriate for defining the criteria of retardation. The author advocates abandoning definitions based on intelligence tests and…

Statistical bias in measurement and ethnic-group bias in testing are discussed, reviewing predictive and construct validity studies. Item bias is reconceptualized to include distance of item content from respondent's experience. Differing values of mean and standard deviation for bias parameter are analyzed in a simulation. References are…

Attitudes of 168 practitioners (pediatricians, psychologists, special educators, allied health professionals, and social workers) toward mental retardation were compared. Results showed that pediatricians were significantly more pessimistic about the ultimate abilities of mentally retarded adults than psychologists and educators. (Author/SEW)