Investigated 5-month-olds' perception of an object whose center was occluded and whose ends were visible only in succession. Found that infants perceived the object as one connected whole when the ends underwent common motion but not when the ends were stationary. Results suggest that infants perceive object unity but not object form. (Author/BC)

Investigates whether English learners give evidence of observing markedness and faithfulness constraints relating to nasal place assimilation. Employs the Headturn Preference Procedure to introduce a general experimental paradigm for exploring infants phonological grammars. (Author/VWL)

Results provided evidence that 6- and 12-week-old infants' preferences for a moving set of stripes over a stationary set were based on the velocity rather than on the temporal frequency of stripe movement. Estimated velocity thresholds of 9 degrees per second for 6 week olds and 4 degrees per second for 12 week olds extended results of previous…

Infants 7 to 8.5 months of age successfully differentiated 2 spectral structures in the context of variations in fundamental frequency, intensity, and duration. Subjects' performance with nonarbitrary categories could not be attributed to memorization of the familiarized set. (RH)

In three studies, infants reached for objects as distinct units when the objects moved separately or were separated in space. Otherwise, infants reached for objects as one unit. In one study, patterns of dishabituation provided further evidence that separated or separately moving objects were perceived as distinct units. (RH)

After haptic habituation to a ring display, infants perceived the rings in two experiments as parts of one connected object. In both haptic and visual modes, infants appeared to perceive object unity by analyzing motion but not by analyzing figural goodness. (RH)

A naturalistic home study delineated earlier and later walking groups. Age-held constant analyses indicated that earlier walkers and their mothers generally showed a rise of positive exchanges as well as a testing of wills across the transition to walking. Changes were less clear for the later walkers, and differences were also observed between…

Notes that federal requirement to develop Individual Family Service Plan (IFSP) for all infants and toddlers with special needs has major conceptual difficulty stemming from linkage of family service to family assessment. Sees many authorities as advocating parents and professionals as partners in assessing needs and planning services. Questions…

Studied reaching movements by groups of infants of 4.5, 6, and 7.5 months. At all ages, initial direction of movement was correlated with target direction. This result provided evidence that hand was aimed toward target. Changes in movement direction tended to curve hand path toward target. This result provided evidence of error correction. (RH)

In three experiments, infants enacted event sequences and one week later reenacted the sequences while using props that had replaced some of the props used in the first sequences or after selecting props functionally equivalent to the props used in the first sequences. These results demonstrated infants' spontaneous generalization and their…

In their commentaries, Carver, Richmond and DeBoer pose several challenging and insightful questions in response to our target article. Two key themes emerged from their commentaries, which are important in the field of infant memory research. The first concerns the use of deferred imitation as a paradigm, and its relationship to other methods of…

Objective: To explore heart rate (HR) correlates of attachment behavior in young mothers and their infants to generate specific hypotheses and to provide pilot data on which studies to test those hypotheses might be based. Method: Using the strange situation procedure, patterns of attachment were assessed in 41 low-income adolescent mothers and…

Substantial increases in cigarette taxes result in decrease in smoking by pregnant women. It is also observed that there is consequent improvement in infant birth weight. The conclusions are based on the data from four states that opted to raise cigarette taxes by a large margin.

Summer is the time to take full advantage of the myriad wonders of nature--and all the outdoor play spaces--with children and toddlers. In this article, the author presents several outdoor summer activities for infants and toddlers.

Little is known about whether infants perceive meter, the underlying temporal structure of music. We employed a habituation paradigm to examine whether 7-month-old infants could categorize rhythmic and melodic patterns on the basis of the underlying meter, which was implied from event and accent frequency of occurrence. In Experiment 1, infants…