Twelve culturally disadvantaged 4-year-olds of borderline normal intelligence were subjects of this study. Its primary purpose was to test further the cognitive learning theory previously developed, as well as the reinforcement system, the facilities, and the experimental-longitudinal methods of research. The study did not include a control group…

In an attempt to improve the readiness of 3- and 4-year-old disadvantaged Mexican-American children, the New Nursery School was developed in Greeley, Colorado. The activities are autotelic; that is, the child does something for its own sake rather than for the sake of obtaining rewards or avoiding punishments that have no inherent connection with…