Thirty-one normal neonates were monitored for 24 hours on a newly developed movement monitor which provided measures of noncrying activity and counts of various movement amplitudes. (Author/SDH)

This study sought to assess the ontogenetic course of three classes of size-value phenomena. Size-value phenomena refers to the observation that valued and neutral objects physically equal in size are judged as unequal. Results are discussed in terms of perceptual development. (ST)

The theory of social comparison postulates that the tendency to compare one's performance to others' will decrease as a function of the discrepancy between the quality of one's own performance and that of the comparison person. (Author/MB)

This study investigated the effect of an interaction between relatively active and relatively quiet boys on their joint activity level. (Author/RY)

This editorial discusses the "Child Development" journal's 25 percent manuscript acceptance rate, the publishing of good papers, the absence of editorial bias in the journal, and the conservatism of scientific research. The increase in studies of adolescent development is noted. Editorial and writing standards are stressed. (BC)

Although dissociations in children's responses are sometimes about "getting it right" for an experimenter, they might also often reflect differences between conscious and subconscious processing that are not geared to correct performance. Research with adults also reveals many cases of dissociation, and adults can more easily be subjected to…

A study of the relationship between pain-relieving drugs given to mothers during labor and delivery and neonatal behavior as assessed by the Brazelton Scales. Tested 44 infants on eight different days during their first month of life. (SDH)

Two experiments sought to determine whether rehearsal strategies constitute a primary determinant to age-related changes in auditory short-term memory. (ST)

The effect of grammatical phonological rules (those in English) and nongrammatical (those in other languages) on the learning and reproduction of morpheme-length utterances and the role of maturation on this effect were examined. Children preschool through second grade were the subjects. There were no significant differences at any grade level…

These studies focused on sex differences and were designed to test the hypothesis that girls were more likely to be immobilized by a fear stimulus than boys. (Authors/CB)

Major Purpose of the study was to investigate the extent to which aggressive retaliation in boys at three age levels is influenced by two dimensions of hypothetical provocation: accidental versus intentional and verbal versus physical. (Authors/CB)