Results are discussed in terms of cognitive growth, the psychoanalytic notion of ambivalence, the role of stimulus context in eliciting laughter or fear, and a possible adaptive, stimulus-maintaining function of laughter. (Authors)

Study sought to provide developmental data about the age at which a child will not only color the same object the same color in a reliable fashion, but will also use the correct color." (Author)

Test performance across age groups followed a highly significant linear trend. (Authors)

For the age range tested there is a lag between the perception and production of certain facial expressions. (Authors)

Distinction is made between self (self as a subject) and self-concept. (MB)

The aesthetic preferences of 224 Jamaican children and 558 previously-studied American children are reported in this paper. Both samples of subjects included male and female children from advantaged and disadvantaged backgrounds. The age groups studied were 3-, 4-, 5-, and 6-year-olds and a combined group of children 7-years-old and older. Each…

The original "Bayley Scales of Infant Development" (BSID) (Bayley 1969) have been among the most popular measures of performance and aptitude of infants. In the present study the reliability and construct validity of mental and motor scores on the revised Bayley Scales of Infant Development-II (BSID-II) were investigated. A national…