Investigated infants' reactions to the face-to-face/still-face paradigm. Infants reacted to the still-face with negative affect, a drop in vagal tone, and an increase in heart rate. By contrast, they reacted to the reunion episode with a mixed pattern of positive and negative affect. (HTH)

Presents a mathematical model of the development of reaching behavior in infants, along with the results of two experiments that showed that infant movements could be decomposed into the underlying submovements using a principled method; and the angular error in infant reaches matches the form and magnitude of error assumed by the model. (MDM)

Examined 7- and 9-month-olds' ability to categorize cats and dogs as separate from one another. Found that both groups formed a cat category that included novel cats but excluded a dog and an eagle, and formed a dog category that included novel dogs and a novel cat but excluded an eagle. Results mirrored those of 3- to 4-month-olds with visual…

Five experiments demonstrated that 6.5-month-olds perseverated in a violation-of-expectation task to examine reasoning about width information in containment events. After watching a familiarization event in which a ball was lowered into a wide container, infants failed to detect the violation when the same ball was lowered into a container half…

Examined relations between reactivity (peak response) and regulation (response dampening) in 6-month-olds' cortisol and behavioral responses to inoculation. Found that reactivity and regulation were unrelated for both cortisol and behavior, suggesting both measures are needed to characterize more accurately infant response to stress. Found…

A total of 32 3-month-old infants were carried by their mothers in a soft infant carrier designed to place the infants facing either inward or outward. A within-subject comparison found that when infants were carried facing in, they spent significantly more time sleeping, while infants carried facing out were more active. (MDM)

In one experiment, sucrose arrested crying and reduced heart rate and gross activity in 2-week-olds but was ineffective in calming 4-week-olds unless accompanied by eye contact. In a second experiment, for 4-week-olds who received sucrose without eye contact or water with eye contact, the reduction in crying was modest and not sustained.…

Two studies investigated whether 10- and 12-month-olds can use televised emotional reactions to guide their behavior. Findings indicated that 12-month-olds avoided the target object and showed increases in negative affect after observing an actress orient toward a novel object with negative affect, but their responses to positive versus neutral…

Some infants experience unusual stress from pregnancy through the postnatal period and are especially called upon to exercise coping responses. Discusses unusual stressors, how the infant naturally copes with them, and how caregivers can provide assistance. Reviews studies on stress-relieving intervention techniques. (NH)

Reports that, even though young infants can discriminate among different facial expressions, there are individual differences in infants' expressivity and ability to produce and discriminate facial expressions. (PCB)

Discusses the significance of emotional communication and social referencing of the mother by her infant as determinants of the infant's affective reactions to other social figures in the environment. (PCB)

Studied 112 preterm infants to determine developmental changes and stability of individual differences. Results indicate significant developmental gains with age, and highly significant individual stability of performance across age. (RJC)

The study with 32 male college students supported previous studies depicting the infant cry as a stressful and aversive event, capable of eliciting increased drinking. Subjects who heard an infant cry consumed significantly more alcohol and reported feeling more aversion, arousal, and distress than subjects who listened to a smoke alarm.…

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)