This paper suggests that, at present, a science of natural developmental processes does not exist because few studies are concerned with development as it transpires in naturalistic environments and because truly developmental data are not collected or analyzed. (Author/JMB)

Development of object identity was studied within the framework of a hiding game that varied the objects themselves instead of their spatial positions. (Authors)

Finding supports the educational theory and practices of Montessori educators. (Authors)

Study demonstrates that the curvilinear relation between age and peripheral learning from films may not be so general a phenomenon as it appeared from previous research. (Author/CB)

The performance of the older subjects (10 years and up) was facilitated by the organizational cues, whereas that of younger subjects was not. (Author)

Results were interpreted in terms of current conceptions of age differences in information-processing speed. (Author)

Wariness did not set in gradually over a period of time but, on the contrary, was found in its fully developed form at 9 months, having been completely absent at 8 months. (Authors/MB)

Intellectual realism was investigated by using as a model a cup with the defining feature (the handle) not visible, and a nondefining feature (a painted flower) visible. (Authors/MB)

The most significant finding is that classification according to complete similarity not only occurs much earlier than reported by Inhelder and Piaget, but also does not follow the developmental course reported by Inhelder and Piaget. (Author)

Aim of the present study was to clarify the processes involved in the apparent lag in copying a diamond by reducing the lag experimentally with perceptual training of discrimination of orientation. (Authors)

Shares three ideas concerning how to evaluate the practical importance of developmental findings to make them more useful to policymakers: (1) statistical significance tests need to be accompanied by effect size estimates; (2) meta-analyses are helping in using all existing data when examining issues involved in policy debates; and (3) researchers…

While father absence due to divorce, desertion, or separation had the most negative influence in the initial 2 years of the child's life for boys and girls, father absence due to death was the most detrimental when it occurred in the 6 - 9 period of the boy's life. (Author)

A developmental model for paranoid behavior has been proposed which postulates that the attempt to adapt to sustained aversive maternal control by manipulative social approach behaviors (open adaptive style) leaves the person vulnerable to emerging paranoid tendencies. (Author)

Results indicated that at all age levels Ss held a predominantly favorable view of the mesomorph, a markedly unfavorable view of the endomorph, and a somewhat less negative but still unfavorable view of the ectomorph. (Authors)

Two major trends in the development of natural language concepts were found in the present study: (1) there was a clear indication that such concepts exist in a relatively fragmented form in young children; (2) young children showed a strong dependence on perceptual attributes in their definitions of concepts. (Author/CB)