Eleven elementary-school hearing-impaired students were shown pictures and asked to make up a story; and were presented stories in speech and signs, with and without pictures, and asked to retell the stories. Results indicated that the students made use of story grammars in organizing retellings and in constructing stories; pictures enhanced…

Investigates fricative perception in toddlers using repeated tests to control for factors relating to task difficulty and stimulus familiarity. Each subject was tested on a contrast the child produced distinctly in an imitation task and one the child produced as similar syllables. Final perception results were well matched to productive…

This paper discusses basic strategies in providing speech information to deaf individuals via the tactile modality and describes the Tactaid II and Tactaid VII vibrotactile aids employed in the Central Institute for the Deaf Sensory Aids Study. Coding, display, and operation are described for each device. Results from previous studies with both…

Sex differences in spatial ability were examined in 410 Israeli college students using standard tests of mental rotation. On related abilities tests, males performed better than females on a numerical skills test, and females performed better on an associative memory test. No significant sex differences were found on other ability tests. (SLD)

A 5-year-old preschool child with a visual impairment and significant developmental delay underwent training to learn to reach and locate objects from a sitting position and to locate and move toward given objects in the environment using the Infant Sonicguide. Time constraints prevented achievement of the second goal. (Author/SW)

This study examined the matching and sequencing of quantities, numerals, and arbitrary forms by two individuals with mental retardation. Results showed that sequence training did not readily lead to new matching performances, unlike prior research with college students. Instead, training in matching to sample yielded emergent sequence production…

Examines the potential contribution of different neural systems to developmental change in the duration of visual fixation, and the individual differences in that variable that are predictive of subsequent cognitive function. Presents hypotheses concerning two specific and independent neural systems and how they might contribute to individual and…

Two experiments investigated perceptual primacy of dimensional and similarity relations in stimulus classification of mentally retarded children. Results support a distinction between separable and integral stimulus structures, but do not support an integral-to-separable shift in perceptual development. Results suggest implications for…

Twelve children (ages 7-8) with attention deficit hyperactive disorder were administered the Selective Auditory Attention Test twice: after the administration of methylphenidate and after the administration of a placebo. Results revealed no simple drug effect but a strong order effect. (Author/JDD)

Addresses the nonuse and misuse of sound when designing instruction using educational technology and presents the Structured Sound Functions (SSF) Model to improve sound attribute research and scriptwriting guidelines. The preference for visual interfaces is discussed, including educational television (ETV), and the creation of sound-image…

Used event-related potentials (ERPs) and fixation duration to examine infants' responses to events. Found that ERPs, but not looking time, distinguished between familiar events presented frequently rather than infrequently, and between familiar and novel events presented infrequently. Proposed that ERPs reflected updating of working memory or…

Reports on experiments to determine effects of overt speech on children's use of inner speech in short-term memory. Word length and phonemic similarity had greater effects on older children and when pictures were labeled at presentation. Suggests that speaking or listening to speech activates an internal articulatory loop. (Author/GH)

Describes a study of three infants whose parents presented vocal models for the infants to imitate. Parents presented vocal models both with and without social praise. Infants showed systematic increases in matching after praise was introduced. Nonmatching vocalizations did not increase with introduction of praise. Findings demonstrate generalized…

Six experiments involving 192 infants and 1 experiment with 16 college students examined sensitivity to acoustic correlates of phrasal units in English. A basic finding is that nine-month-old infants are sensitive to acoustic markers that correspond to major phrasal units, a sensitivity that develops after six months. (SLD)

As follow up to a study which compared forced-choice preferential looking (FPL) with pattern visual evoked potential (VEP), this study increased the VEP success rate and improved agreement between the FPL and VEP acuity estimates by using horizontal bar stimuli for young preverbal children (n=17) with nystagmus. (Author/DB)