Eighty at-risk infants were administered the Mental and Motor Scales of the Bayley Scales of Infant Development at 6 and 12 months of age. Test-retest reliability scores of .71 on the Mental Scale and .69 on the Motor Scale were obtained. (Author/JDD)

This study found that 5 7-year-old and 4 10-year-old prelingually hearing-impaired children displayed evidence of anticipatory coarticulation based on temporal and spectral cues, but they did so to a lesser degree than normally hearing children. (Author/JDD)

Tested infants in their second year with a box task to determine whether they would show a hand preference in solutions involving complete differentiation of roles for the two hands. (HOD)

Measures of both temporal and spectral parameters were computed to determine the extent of perseveratory coarticulation in the vowel-consonant syllables produced by 7- and 10-year-old children (n=9). Profoundly hearing-impaired speakers exhibited measurable but smaller effects of perseveratory coarticulation relative to the normally hearing…

From earliest infancy, a typically developing child imitates or mirrors the facial expressions, postures and gestures, and emotional behavior of others. Where does this capacity come from, and what function does it serve? What happens when imitation is impaired? Synthesizing cutting-edge research emerging from a range of disciplines, this…

Acoustic and video data tracing the development of intrasyllabic coarticulation suggest that young children (n=30; ages three, five, and eight) and adults (n=10) produce similar patterns of anticipatory coarticulation, and perceptual data indicate that coarticulatory cues in the speech of three year olds are less perceptible than those of the…

Reviewed are 14 studies employing single-subject methodology to investigate the results of interventions to improve developmental functioning in handicapped preschoolers. Interventions included treatments to develop physical responsiveness, increase feeding behavior, and decrease rumination or compulsive vomiting. Knowledge concerning the…

Development of ambulation was studied with 1,744 children, ages 3 to 10, with moderate to profound mental retardation. Although the probability of improvement declined with age, some improvements in basic skills did occur far past the normative age for development of speech and ambulation, across all levels of mental retardation. (Author/DB)

Evaluation of the Kent Scoring Adaptation, which determines developmental ages in several domains based on an infant's performance on the Bayley Scales of Infant Development, with 27 at-risk infants supported the concurrent validity of the cognitive, language, and, to a degree, social domains of the Kent procedure but not the fine and gross motor…

Two studies on cognitive performance in mentally retarded children are reported. In the first study, the Bayley Scales of Infant Development were administered to 56 mentally retarded children, aged 2 to 6, to determine the possibility of discerning subsets of items that form a developmental pattern of interrelated subscales, using the SCAMMO scale…

Down Syndrome children (N=229), aged 1-83 months, from Australia, Canada, and Germany were tested using the Bayley Scales of Infant Development. Test performances on the Bayley's Mental and Motor scales were not dissimilar, leading to the conclusion that young Down Syndrome children from different countries with relatively comparable standards of…

An intensive early intervention program was evaluated by assessing gains made by 44 special needs children (age 2) in cognition, gross motor, fine motor, receptive language, and expressive language domains. Comparison of actual to predicted posttest scores did not reveal significant gains in any domains. In cognition, gross motor, and fine motor…

The purpose of the study was to determine whether particular aspects of movement control influenced the performance of 2-year-old children on a standard developmental test, and thus influenced assessments of intellectual progress based on that test. Six cerebral-palsied (CP) children were compared with six children not suffering motor system…