Children's hypothetical reasoning about a complex and dynamic causal system was investigated. Predominantly White, middle-class 5- to 7-year-old children from the Greater Toronto Area learned about novel food chains and were asked to consider the effects of removing one species on the others. In Study 1 (N = 72; 36 females, 36 males; 2018),…

Research on classroom peer effects has focused nearly exclusively on high-income countries and on academic skills. Little is known about peer effects in low-income countries and whether effects differ under different educational environments (e.g., teacher-directed versus child-centered, conditions of concentrated advantage or disadvantage). Based…

Two-generation human capital programs seek to promote the education of parents and children simultaneously. This study examines relations between family participation in Career"Advance," which recruits parents of Head Start children into a workforce training program, and children's Head Start attendance. The sample included 293 children…

A central controversy in developmental science, enflamed by nativist accounts, is whether development is best viewed as a series of qualitative or continuous changes. This article defends the notion of qualitative change from the perspective of dynamical systems theory (DST). Qualitative change within DST refers to the shift that occurs when a…

Nativist and constructivist approaches to the study of development share a common emphasis on characterizing beginning and end states in development. This focus has highlighted the question of preservation and transformation--whether core aspects of the adult end state are present in the earliest manifestations during infancy. In contrast, a…

This paper is in memory of Esther Thelen, who passed away while President of the Society for Research in Child Development. A survey of Esther Thelen's career reveals a trajectory from early work on simple movements like stepping, to the study of goal-directed reaching, to work on the embodiment of cognition, and, ultimately, to a grand theory of…

Videotape recordings were made of the kick and step movements of six infants seven months of age, while they were in supine and upright positions on a stationary and moving treadmill. When placed on a moving treadmill, infants performed alternating stepping movements with many characteristics of mature walking. Implications are discussed. (RH)

Focuses on systems theory as the paradigm underlying family therapy and considers the implications of this framework for conceptions of the individual, the study of parent-child interaction, and new research formulations and areas of study. Considers trends in the developmental field that move toward such formulations. (RH)

Argues that dynamic systems approaches may provide an explanatory framework based on general scientific principles for developmental psychology, using principles of self-organization to explain how novel forms emerge without predetermination and become increasingly complex with development. Contends that self-organization provides a single…

A model of infant social behavior is developed which incorporates attachment to the familiar and fear of strangers as well as detachment from the familiar and exploration of the stranger. (JMB)

Using a dynamic systems approach, examined the development of intralimb coordination over the first year of independent walking in three infants. Found that, in the first month of walking, there was much instability between the thigh and shank of the leg, but after three months infants appeared to have found an adult-like stable coordinative…

After reviewing recent contributions to the field of motor development, suggests a pattern formation or dynamics approach to child development as an alternative to the conventional approaches emphasizing maturation (nativist), specific learning experiences (empiricist), cognitive stages (Piagetian), and strategies of encoding and retrieval…

Argues that although meta-analysis makes an important contribution to summarizing attachment studies, it limits the conceptual understanding to simple causal models and ignores family systems models that could illuminate the development of secure and insecure attachment. Maintains that fathers' role in attachment and the impact of the quality of…

Examined influences on African-American children's cognitive development between 6 months and 8 years. Found that more optimal patterns of development were associated with intensive early educational child care, responsive home stimulation, and higher maternal IQ. Child care experiences were related to cognitive performance through enhancing…