The conclusion that learning disabled children have a deficit in perceptual organization is not accepted because of two major methodological problems. Dean refutes this criticism showing that learning disabled children have a perceptual organization deficit when compared with emotionally disturbed children. (Author/BEF)

Twenty-one studies that reported mean score differences between the Woodcock-Johnson Tests of Cognitive Ability (WJTCA) and the Wechsler Intelligence Scale for Children-Revised (WISC-R) Full Scale are summarized. The differences are found to be minimal and are attributed to data bias and WJTCA's higher correlation with achievement. (EGS)

This article defends research evaluating similarities and differences in psychometric performances of students with learning disabilities (LD) and students with low achievement (LA), which concluded that psychometric test performance alone was an insufficient basis for differential diagnosis. Recent criticism of the research by Kenneth Kavale and…

The cumulative, long term impact of alternative kindergarten scheduling for everyday half- and full-day programs was examined for three successive cohorts of children. Dependent measures included academic achievement, school sentiment, personal-social behavior, school attendance, and referral to special education classes. Parent perception of…