A longitudinal study followed perceptual and problem solving skill development in children (2-11 years old) with severe problems of oral and written language acquisition: 15 hearing impaired (HI) Ss; 11 children with a hearing loss that alone did not account for their language problem, who presented in addition so-called "learning problems" (HIL…

This study investigated whether young, poor, inner-city children are deficient in the mathematical skills and concepts necessary for later success in school arithmetic. Children of pre-kindergarten and kindergarten age, black or white, and lower class or middle class, were given a wide variety of mathematical tasks, including Piagetian measures,…