From a dynamic systems perspective, transition points in development are times of increased instability, during which behavioral patterns are susceptible to temporary decoupling. This study investigated the impact of the vocabulary spurt on existing patterns of communicative coordination. Eighteen typically developing infants were videotaped at…

In most of our social life we communicate and relate to others. Successful interpersonal relating is crucial to physical and mental well-being and growth. This study, using the still-face paradigm, demonstrates that even human neonates (n = 90, 3-96 hr after birth) adjust their behavior according to the social responsiveness of their interaction…

In the four studies reported, facial expressions of emotion are considered to be not merely responses indicative of internal states; they are also stimulus patterns that regulate the behavior of others. Results indicated that one-year-old infants seek out and use maternal facial expressions to monitor behavior. (Author/DST)