Developmental growth of residents of a university operated institution was studied over an eight-year period of time. Long-term residents received decreasing benefits over time, although shorter term residents evidenced only linear growth. The ideal duration of services was estimated as approximately three to four years. (Author)

This study is concerned with the way in which children's naturally occurring behaviors change over a period of time as they adapt to a nursery school setting. A set of seven varieties of environmental constraints and fourteen adaptations to these constraints was observed among 18 3-, 4-, and 5-year-olds in a nursery school classroom first in the…