Three studies investigated comfortable loudness levels with particular reference to their application to hearing aid gain prescriptions. The studies, involving 33 normal hearing adults and 77 adults with hearing impairments, suggest that comfortable loudness levels for continuous speech bands can be estimated rather accurately, quickly, and with…

Forty-six fifth-and-sixth-grade students with hearing impairments participated in either a 14-period rhythmicity treatment program or a control program. Evaluation concluded that rhythm perception/production could be reliably measured and that the quality of rhythmic tapping performance was a function of the modality of stimulus presentation.…

Three children with autism (ages seven-nine) were taught to verbally name pictures using a progressive time delay procedure. Results of a multiple probe design across pictures and replicated across students indicated that the time delay procedure was effective in fading extra-stimulus prompts. The procedure resulted in nearly error-free…

Laboratory results are presented which suggest that hearing-impaired individuals' speech perception can be enhanced through use of tactile aids with a number of tactile transducers conveying information about the spectral content of the speech signal, and speech production can be improved through experience using a multichannel tactile aid.…

The study identified eight environmental stimuli present during the training of two moderately retarded students (ages six and nine). Results demonstrated that by altering one stimulus at a time, correct responding continued. Implications of the findings for stimulus control and generalization training are discussed. (Author/DB)

The study of Down Syndrome (N=16), other mentally retarded, and non retarded subjects (all matched for mental age) found that Down Syndrome subjects showed significantly poorer recall of auditorially presented stimuli than the other two groups (which did not differ). (Author/DB)

Two studies examining three correlates of child picture naming difficulty (age of name acquisition, picture-to-name uncertainty, and name generality) suggested that picture-naming reflected both the availability of the name in the lexical memory and the name's accessibility, which, in turn, partly depended on the amount of interference from…

Examined reversal of emergent simple discriminations through stimulus contiguity. In experiment one, Baseline and Reversal phases were positive for most children. Experiments two through four examined protocol aspects that possibly contributed to successful reversal of the form discrimination; found that reversed discrimination usually was a…

Newborns were habituated to white squares of varying size and luminance and retested with colored squares for recovery of habituation. Newborns could discriminate yellow-green from white in large squares, but not in small squares. They could not discriminate blue, blue-green, or purple from white. Results suggest newborns have little…

Visual scanning patterns of 17 students with mental retardation and control groups matched for chronological or mental age were recorded during visuomotor tasks. Results suggested that subjects paid more attention to penpoints than to the succeeding or passed points of a model line, indicating that they have a poorer ability to process more than…

Discusses two problems in the study by Blass and Ciaramitaro reported in this monograph: (1) whether the measurement of behavior states as "on-off" or "graded" captures a behavioral process or reflects the measurement itself; (2) whether the term "state" explains findings as a single function that may be better…

To assess changes in processing speed in the second and third years of life, 2 sequential visual events were shown to 22-, 27-, and 32-month-old children, 12 at each age. Response clusters indicated that speed of processing increased with age and that a proactive inhibition declined with age. (SLD)

In a visual habituation experiment, infants watched a circle (the "agent") move toward another circle by jumping over a barrier or jumping without a barrier present, and then watched a circle move straight to another circle. Found that infants were able to identify the agent's spatial goal and to interpret the agent's actions causally in…

The memory abilities of adults (N=20) with Down Syndrome (DS) were compared to subjects matched on age and IQ and on age alone. Three memory tasks were employed: facial recognition, free recall of pictures and words, and cued recall of separate or interacting pictures. In DS individuals, memory was improved primarily by practice and interactive…

A series of experiments involving over 400 college students performing acoustic-lexical decisions during object naming at different stimulus-onset asynchronies show semantic activation of lexical candidates and phonological activation of target items but no phonological activation of other semantically activated items, supporting a two-stage view…