Compared were two samples of 173 and 95 aggressive and normal 5- to 8-year-old boys on measures of verbal and cognitive development. Aggressive boys were significantly lower than normal boys on nonverbal tests but not on verbal tests. The pattern of test performance which distinguished aggressive and normal was consistent with the hypothesis that…

A battery of cognitive, personal, and demographic tests were given to 216 children from Title I (of the Elementary and Secondary Education Act) schools, with and without previous school experience, and to 31 children from non-Title I schools. The effects of prekindergarten experience upon subsequent school experience were evaluated. The Title-I…

A. R. Luria, in his conception of the verbal control of behavior, regards four fundamental and distinctive functional attributes of the human speech system as making up a signaling system that humans alone possess: (1) the nominative role of language, (2) the generalizing or semantic role, (3) the communicative role, and (4) the role of…