Research was conducted to evaluate the effectiveness of a 12-week intervention program of individual instruction for disadvantaged preschool children. Based on this pretest, 17 children with IQ scores of 107 or less were selected and placed into experimental and control groups. The experimental group was exposed to individual cognitive and…

In a study to determine whether or not culturally deprived children develop at progressively greater deficits in intellectual functioning during the ages of 15 months to 3 years, tutors provided 15-month-old infants with intellectual and verbal stimulation one hour daily, five times a week until they were 36 months old. The subjects consisted of…