Data collection can be the most time- and cost-intensive part of developmental research. This article describes some long-proposed but little-used research designs that have the potential to maximize data quality (reliability and validity) while minimizing research cost. In "planned missing data designs", missing data are used…

Familiarizes educators and researchers with a method to develop curriculum according to the individual cognitive styles of individual students. (Author)

In a continuing description of a Head Start longitudinal study, analyses are presented of the interrelationships among individual measures of the child's performances prior to school entry, accompanied by brief descriptions of the tasks and the scores used. Despite the size and extensiveness of the data base, the findings are considered tentative…

This paper deals with (1) psychometric and Piagetian orientations and the different types of test each approach yields, (2) rate of progress measures, and (3) the predictability of an individual's future functioning. Advantages of the Piagetian orientation are discussed. (GO)

This study investigated the extent to which data collected on play behavior differ when two different data collection methods, observation alone and observation plus interview, were used. A secondary objective was to compare data collected using both methods in an indoor and outdoor play environment. The social and cognitive play behavior for a…

Seven sequential ordinal scales of sensorimotor development are briefly described. These scales permit modification in the strategy for assessing infant development, investigating its structure and investigating infant-environment interaction. (GO)

This paper synthesizes explorations from two research projects with 3- and 4-year-olds in the areas of instrumental music-making and telephone discourse, sharing an approach to research with young children in which the adult participates in the child's activity and seeks to share the initiative. The interpretive, participatory approaches used are…

This report concerns the field procedures and data analysis being used in the New York City Infant Day Care Study, a large-scale longitudinal study examining publicly-funded, community-controlled group and family day care programs in New York and comparing the effects of these programs and of home rearing on children and their families. Children's…

Measuring cognitive achievement gains in project evaluation is dealt with. This guide provides those concerned with project evaluation with the basic tools for conducting technically sound, interpretable evaluation studies. Exotic designs are avoided and five basic models which appear feasible to implement in real-world settings are focused on.…

Approximately 6,500 children are enrolled per year in the New York State Experimental Prekindergarten Program (PreK). In 1975-76 a longitudinal study was begun to determine the program's impact on the development of children while enrolled in the program and in the primary grades. Samples from a population of 5,245 four-year-old prekindergarten…