Two experiments were conducted to assess the effects of varying degrees of external evaluation not only on performance but also on continuing motivation. (Authors)

It was concluded that while retinoblastoma per se is not associated with intellectual superiority or inferiority, retinoblastoma associated with blindness may result in selective cognitive superiority. (Authors)

Results offer empirical support to Ilg and Ames's claim that the Gesell battery is an excellent predictor of school readiness. The close similarity of the Piaget and Gesell tests accords well with previous findings that the two tests have much in common. (Authors/MB)

Compensation as assessed by any one test or criterion used is more difficult than conservation. And, the understanding of the compensation principle, as manifested in verbal statements, continues to develop well after the age at which liquid conservation may be taken for granted. (Authors)

The Babkin reflex is a reaction to the simultaneous pressing of the palms of the hands of the infant. (Authors)

Results indicate that the pattern of acquisition of noun plurals in English is comparable for both children having English as their first language and those acquiring English as a second language. (Authors)

Major conclusion from this exploratory analysis was that if the black families were viewed by white norms they appeared authoritarian, but that, unlike their white counterparts, the most authoritarian of these families produced the most self-assertive and independent girls. (Author)

When differences in level of motivation were controlled, all of the previously found differences between firstborn and later born disappeared. (Authors)

Study compares the effects of different conditions which imply reversibility on children's judgments of conservation of quantity. (Authors)

Study directed at determining which aspect of photographic representations of children differing along dimensions of race and sex would acquire control over responses of Negro children. (Authors)

Study was an attempt to explain the observed difference associated with sentence type in the performance of children and the absence of a similar difference in the performance of college students. (Author)

Channel properties of the deaf children's gesture language are discussed in the light of their communicative behavior. (Author)

Provides background information and a practical guide for including demographic information in developmental research. Describes historic demographic trends reflecting ways family and economic environments have been and continue to be transformed; presents demographic statistics to provide basis for comparison of research populations; and offers…