Autism spectrum disorders (ASDs) are characterized by correlated deficiencies in social and language development. This study explored a fundamental aspect of auditory information processing (AIP) that is dependent on social experience and critical to early language development: the ability to compartmentalize close-sounding speech sounds into…

The effectiveness of continuous stimulation in lowering arousal level, as indexed by state and heart rate, was studied in 30 uncircumcised males, 30 circumcised males, and 30 female subjects. The continuous-stimulation effect was shown to be directly related to auditory stimulus intensity. (Author/CS)

Frequency difference thresholds were determined for fourteen 4- to 9-month-old infants (mean age, 6 months 10 days) using a discrimination learning paradigm, following a one-up, two-down staircase procedure. The subject heard 500 msec tone bursts repeated at a rate of one per sec, with a fixed standard frequency. At various points in this pulse…

The findings of Marsh and Sherman's investigation, in 1970, of the speech sound discrimination ability of kindergarten subjects, are discussed in this paper. In the study a comparison was made between performance when speech sounds were presented in isolation and when speech sounds were presented in a word context, using minimal sound contrasts.…

Four papers on perceptual processes, by (1) W. Ahlbrand; (2) E. Elenbogen, S. Sperry and G. A. Thompson; (3) B. Randhawa; and (4) T. Sticht and D. Glasnapp, which were presented at the 55th annual meeting of the American Educational Research Association, are critiqued here. Emphasis is upon the relevance of the papers to issues in perceptual…

The monosyllabic word discrimination of 12 normal and 12 hearing-impaired children (8-13 years old) was evaluated in situations selected to simulate acoustical conditions in current educational environments. (Author)

Five studies investigated children's perception of scale and contour in melodies. It was found that young children can detect key transposition changes in familiar and unfamiliar melodies and are sensitive to melodic contour over transformations that preserve it, yet distinguish spontaneously between melodies with the same contour and different…

Examines the relation between aspects of the fundamental frequency (basic pitch) of 16 infant newborn cries and 28 multiparous mothers' perceptions of those cries. Results support the hypothesis that increases in fundamental frequency are related to increases in maternal perceptions of the intensity of the infant's cry. (Author/RWB)

Study measures the precision of auditory localization in 26- to 30-week-old infants using the adult minimum audible angle test. Results show that infants discriminate sound displacements of about 19 degrees, considerably less accurate than adult values of one to two degrees. (Author/RWB)

Studies development of auditory temporal acuity in 56 children aged 6 to 12 years and in 8 adults. Improvement in temporal acuity with age was attributed to development of sensory processes and not to age-related changes in nonsensory factors. (Author/BE)

Eight subjects were tested for perceptual trading relations between a temporal and a spectral cue for the "say-stay" distinction. Results indicated that young children perceptually integrate multiple cues to a speech contrast in a phonetically relevant manner but that they may not give the same perceptual weights to the various cues as…

Seven hearing impaired children (five to seven years old) assigned to the Speakers group made highly significant gains in speech production and auditory discrimination of speech, while Listeners made only slight speech production gains and no gains in auditory discrimination. Combined speech and auditory training was more effective than auditory…