In this paper we discuss several key challenges encountered when conducting a study of the continuity of participation in the child care subsidy program. While many of these issues are familiar to those who have studied participation dynamics in other assistance programs, and to those familiar with survival analysis, we describe these challenges…

Compared verbal and visuo-spatial working memory (WM) performance under initial, gain, and maintenance conditions for nine age groups from 6 to 57 years to determine if differences were attributable to specific or general processing functions. Found support for a general-capacity explanation of age-related differences, reflecting demands placed on…

Tested in two studies 4- to 7-year-olds' face recognition by manipulating the faces' configural and featural information. Found that even with only a single 5-second exposure, most children could use configural and featural cues to make identity judgments. Repeated exposure and feedback improved others' performance. Even proficient memories were…

An adaptation of the "Stages of Sensorimotor Intelligence in the Child" was used in a longitudinal study of the sensorimotor behavior acquisitions of 24 healthy middle-class infants. Rate of behavior acquisition, variability in behavior performance and relationships between subtests were analyzed. Some comparisons with previous studies are…

Ninety-six children from a high-iodine Chinese village were found to have higher goiter incidence, thyroid gland volume, and urinary/creatinine ratio than 51 children from an iodine-normal village. All children from both villages were euthyroid. Excess iodine did not substantially affect the children's physical or intellectual growth. (Author/JDD)

In recent years there has been increasing interest in the effects of bilingualism on cognitive growth and on the bilingual's attitude toward himself and his 2 language communities. One of the most widely quoted studies on bilingualism is that of Peal and Lambert (1962) who dealt with the relation between intelligence, attitude, and achievement in…

THE DEVELOPMENTAL STAGES IN THE ART OF CHILDREN HAVE BEEN THE SUBJECT OF MUCH CHILD DEVELOPMENT THEORY AND RESEARCH. MUCH OF THIS WORK, EXAMPLES OF WHICH ARE PRESENTED IN THE INTRODUCTORY PORTION OF THIS DOCUMENT, HAS BEEN MERELY ANECDOTAL. OF CONCERN IN THIS STUDY ARE (1) THE FORMULATION OF OBJECTIVE PROCEDURES TO ASSESS THE DEVELOPMENTAL DRAWING…

By the age of 4, children typically have separate schema for relating events in the physical world and for relating events to associated mental states. Generally, these schema cannot be coordinated until around 6 years of age, when the ability to use them together yields a structure for assigning intentionality. This intentional structure develops…