Ninety-five subjects (mean age 55 months) with mental retardation, learning disabilities, and/or minimal brain dysfunction and 47 control subjects (mean age 46 months) were compared to determine the relationship between developmental problems and dental morphology. (Author)

Fifteen mentally retarded (mean age 13 years), 15 learning disabled (mean age 9 years), and 15 normal (mean age 8 years) boys were equated on mental age, administered the Hagen Central-Incidental Task, and presented a modeling tape for imitation. (CL)

Described is a current research project designed to determine which reading instructional techniques are most appropriate for intellectually retarded pupils, learning disabled pupils, or intellectually normal pupils from 8 through 16 years of age. (DB)

The cognitive input organization skill of clustering and its effect on recall were examined in 235 normal, learning disabled, and educable mentally retarded children within three mental age (MA) ranges (5 to 7 years, 7 to 9 years, and 9 to 11 years). Ss were assigned randomly to three conditions testing the effect of different levels of…

Described are two studies which used art therapy to improve cognitive and language abilities in a total of 45 children with learning difficulties or communication disorders. The art procedures focused on the development of three types of concepts: the concept of a class or group of objects, concepts of space, and concepts of sequential order. A…

Six socioeconomic traits were assessed from questionnaire data returned from the homes of 92 children (ages 7 to 13 years) in special classes for the minimally brain injured and 110 children of the same age range in classes for the educable mentally retarded. (Author/DB)

Three short studies were conducted on long-term effects of visual perception training on perceptual memory, involving the visual illusion of apparent movement, in educable and trainable mentally retarded children (EMR and TMR) and in learning disabled children (LD). Variables were lengths of training session and retention interval. Tables…

A comparative study of nonverbal MA matched groups of five autistic, five aphasic, five normal and five retarded children (3 to 16 years old) was made on an auditory-visual and a visual-visual paired-associate learning task. (Author)

The paper traces the development of an integrated model of cognition stemming from Soviet neuropsychology and reviews recent research on simultaneous and successive syntheses. Implications for mental retardation, learning disability, hyperactivity, and reading disability are given. (Author/CL)

Utilizing the Illinois Test of Psycholinguistic Abilities and the Slosson Intelligence Test, 34 children from three intermediate classes designed for the educable mentally retarded were evaluated to denote inter- and intravariability of their learning abilities. (Author)

Described was research on the behavioral and learning effects of lead poisoning or malnutrition in rats. It is explained that approximately 200 rats (either weanling, adult, pregnant, or nursing) were injected with various amounts of lead. It was found that symtomatic levels of lead in weanling or adult rats produced no obvious behavioral or…