The purposes of the study involving four severely handicapped students (11 to 16 years old) were to examine whether the acquisition of instruction- following behavior is facilitated by the presentation of manual signs with verbal instructions and whether manual and verbal expressive abilities are acquired as an indirect result of receptive…

The language behavior of nine educable retarded children (mean age 12 years) was analyzed before and after a 6-week summer-camp-type activity to test the hypothesis that rate of verbal behavior could be increased through a systematic program in which the children would experience an environmental event and concurrently verbalize the experience.…

Fifty-four kindergarten children were screened with the Sapir Developmental Scale to highlight deficiencies in bodily schema, perceptual motor skills, and language development, and were matched in groups of three by score, chronological age, and sex with one of the three acting as control. Three first grade classes were organized as follows: one…