Dance is a universal human behavior and a crucial component of human musicality. When and how does the motivation and tendency to move to music develop? How does this behavior change as a process of maturation and learning? We characterize infants' earliest dance behavior, leveraging parents' extensive at-home observations of their children.…

Infants learn nouns during object-naming events--moments when caregivers name the object of infants' play (e.g., ball as infant holds a ball). Do caregivers also label the actions of infants' play (e.g., roll as infant rolls a ball)? We investigated connections between mothers' verb inputs and infants' actions. We video-recorded 32 infant-mother…

These experiments explored the role of prior experience in 12- to 18-month-old infants' tool-directed actions. In Experiment 1, infants' use of a familiar tool (spoon) to accomplish a novel task (turning on lights inside a box) was examined. Infants tended to grasp the spoon by its handle even when doing so made solving the task impossible (the…

Studied hand-mouth coordination in 40 infants of 1-3 days. Sucrose solution was delivered intraorally every 2 minutes. Results provide evidence for sucrose as a calming agent and for a coordinative behavorial system that integrates hand-mouth activity in supine human infants. (RJC)

The effects of practice on 2 elementary neuromotor patterns, stepping and sitting, were investigated in 32 6-week-old male infants. After 7 weeks, infants who received elicitation of the stepping pattern, alone or in combination with sitting exercises, stepped more than infants who received no exercise or sitting exercise only. (MDM)

Discusses general developmental principles which have emerged from studies in motor development. (RJC)

Investigates the effects of variable-practice versus constant-practice on the learning of novel motor schemata in 36 children ranging in age from two years one month to four years. (Author/SS)

Analyzes the development of the skill of eating with a spoon in 16 infants of 12-23 months. Discusses the acquisition of a tool-using skill in terms of the emergence of strategies for solving particular problems and the consistency and reliability with which they are deployed. (RJC)

Investigated postural constraints on movement of 15 6-month-old infants. Results suggested that each of the developing capabilities of orienting, reaching, and kicking assumed a specific function for locomotion at the stage of crawling. (RJC)

Compared the postural responsiveness of seven-, eight-, and nine-month-old infants. Results indicated greater use of optic flow for postural control after a self-produced locomotor experience. Infants with endogenous (creeping) or artificial (walker) self-produced locomotor experience responded to portions of the optic flow field, whereas…

Examined the effects of hunger on the hand-mouth (HM) behavior of a group of newborn infants. Found that significantly more mouth opening before contacts to the mouth than those to the face occurred before but not after feeding, suggesting some link between HM behavior and hunger state. (MDM)

Two studies involving 108 infants of 6, 9, and 12 months showed that providing infants with multiple action-relevant properties elicits a rich action repertoire. (RJC)

Reports on a portion of a long-term investigation carried out to determine the prognostic significance of newborn behavioral assessments for later development and behavior, in terms of identifying a subpopulation which would be a high risk group. (Author/SDH)

Studied the early development of exploratory behavior in 99 infants of 2-5 months. Results show that there are significant changes in spontaneous multimodal exploration of a novel object between 2 and 5 months. (RJC)