The reliability and validity of the Modified Component Disability Checklist were examined with five secondary learning disabled (LD) teachers, 21 low achieving students, and 21 LD students in grades 7, 8, and 9. During Phase I, teachers matched the component disability to the target behavior; and in Phase II teachers were told to judge each target…

The study investigated the reliability and validity of professional groups using the Modified Component Disability Instrument to identify/evaluate learning disabled (LD) adolescents. Ss included 166 LD teachers, speech clinicians, remedial reading teachers, school psychologists, school principals, and school counselors. Calculations were made for…

Variability in diagnostic procedures and a lack of valid and reliable measures led to the development of a comprehensive battery, which incorporated an operational definition of learning disabilities. The battery consisted of forms for observing these functions: intelligence, academic achievement, gross and fine motor control, visual perception,…