ABSTRACT
A central goal in producing a quality day care program is to provide for infant needs. However, specifying the needs that are important to development is often difficult. One must identify children who are deprived of a hypothesized need and study them over time, a process in which maintaining experimental control is not only difficult but sometimes ethically unfeasible. Because humans take years to reach maturity, such longitudinal research is often costly, and many measurements simply cannot be performed on human children. One solution to these problems has been the use of nonhuman primates as research subjects. Nonhuman primates develop at a faster rate than humans; experimental control is less difficult to maintain; and measurements that are impossible to obtain from human children can often be readily obtained.
