Discusses contributions of Adolph's study to behavioral knowledge; it is an important study of the early development of a universal basic pattern of human behavior, illuminating how humans perceive the possibilities for action and learn to use them when appropriate opportunities are offered. Notes that the study addresses generalization of newly…

Comments on the monograph reported in this issue. Stresses that the monograph illustrates the difficulty of measuring gender stereotypes; provides insight on activity preferences in middle childhood; considers the role of affect in sex typing by distinguishing affective from cognitive influences; encourages broad-based theories to account for sex…

Examined how infants acquire adaptive locomotion in the novel task of going up and down slopes. Found that infants' judgments became increasingly accurate and exploration became increasingly efficient, with no transfer over the transition from crawling to walking. Infants learned to gauge their abilities on-line as they encountered each hill at…

Proposes an amended timetable for the origins of joint visual attention and offers theoretical alternatives for the development of point. Includes discussions of the origins of intentionality, the emergence of joint attention, the transition to pointing comprehension, the signal cues of different joint-attention cues, pointing comprehension, the…

Discusses how Adolph's research is relevant to four themes that are foundational to contemporary research on the development of perception and action: (1) reciprocity between perception and action; (2) prospective control of behavior; (3) variation and selection in the development of new behaviors; and (4) contributions of age and experience.…

Discusses Adolph's research on locomotion with regard to the requirements of an ecological psychology, especially the use of control laws; her examination of individual styles and normative patterns as it reflects a dynamic systems perspective; and her use of cognitive processes of decision making in explaining why infants approach or avoid a…

Examines the meaning of reaction time (RT) and the possibility that it may predict other cognitive and motor skills in the first year of life. Considers two competing models that specify the information-processing components underlying RT performance. Describes the neural data needed to definitively choose between the models and considers…

Discusses new research directions in the study of emotions, including postulations that emotion is relational rather than intrapsychic; emotion and an individual's goals are closely related; emotion "expressions" are social signals, not merely outward signs of internal states; and the physiology of emotion can regulate and be regulated.…

This essay argues that humans are capable of a large number of affect states; a distinction should be made among acute emotions, chronic moods, and temperamental vulnerabilities to a particular emotion state; and research on human effects will profit from a return to, and reinterpretation of, Sigmund Freud's suggestion of unconscious affect…

Examined recall by 14- to 32-month-olds for multistep event sequences experienced at 13 to 20 months. Found that within step-length groups, there were no age differences in the length of time over which memory was evidenced. With prompts by event-related props, age-related differences in memory appeared. Age-related effects were particularly…

Used Visual Expectation Paradigm to describe information processing changes and individual differences during first year of life. Found regular age changes in mean reaction time and variability but not in minimum reaction time, suggesting that growth rate of sensory-detection information is constant during first year but age changes occur in level…

Speculates on underlying processes for the reaction time variance and age differences in anticipation latency using the Visual Expectation Paradigm. Discusses the dichotomization of reactive and anticipatory behavior, limitations of longitudinal designs, drawbacks in using standard procedures and materials, and inferences that can be made…

Investigates children's tendency to return the smile of a friendly stranger in two cultures: Israel and the United States. In the first study, developmental trends in smiling behavior are examined. In the second, mothers' socialization philosophies and childrearing practices are explored in an interview and a conjoint mother/child task. (RH)

Discusses two major contributions of Liben and Bigler's work: (1) introduction of new measures of sex typing; and (2) the proposal that there are two plausible ways in which gender attitudes and sex typing of self might be related. Considers the importance of context on gender salience for information processing. Asserts that Liben and Bigler's…

Responds to concerns that individual items included as stereotypes in the Occupation Activity Trait Scales (children's and adult's versions) are not highly stereotyped. Discusses future directions for research, noting that a developmental approach is critical to understanding gender differentiation establishment and that it is also important to…