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Biomedical subjects

J A McCullough

Publications and source records attributed to J A McCullough.

5 recordsLinked to original sources

Auditory-visual word identification test materials: computer application with children.

The purpose of this investigation was to obtain performance data from normal-hearing children using the written word portion of existing auditory-visual word identification materials, for example, the Picture Identification Task (Wilson and Antablin, 1980). The response foils, consisting of four written words (target and alternative words) were entered into computer memory so that responses were made by pointing to a computer monitor. Subjects were 24 fourth graders with normal hearing who repeated auditory-stimulus words in noise in oral conditions, and pointed to written words representing the stimulus words in pointing conditions. Mean percent correct performance scores were higher in the pointing conditions than in the oral conditions, reflecting closed- versus open-set tasks. The results indicated that the written word portion of the Picture Identification Task can be utilized to assess the word identification performance of children who read at a fourth grade level or above.

Audiovisual Aids

Effects of interaural speech-recognition differences on binaural advantage for speech in noise.

The relationship between interaural differences in speech-recognition performance and binaural advantage for speech in noise was studied. Subjects were five hearing-impaired listeners with symmetrical pure-tone air-conduction audiograms and significant interaural differences in speech recognition. All subjects repeated nonsense syllables in the presence of competing noise in monaural and binaural conditions. Binaural advantage was calculated as the difference in signal-to-noise ratio that afforded 50 percent correct performance between the monaural and binaural conditions. The results were diverse. Although the majority of the subjects retained some degree of binaural advantage, a conclusive relationship between interaural differences in speech recognition and binaural advantage could not be established. The implications for binaural hearing aid fittings are discussed.

Aged

WAIS scores for a non-clinical British sample.

The Wechsler Adult Intelligence Scale (WAIS) was administered to a British sample of 63 volunteers. The mean Full Scale Intelligence Quotient obtained was 116.5, with a standard deviation of 9.7. This finding is discussed in relation to the accepted (American) WAIS norms, and further study suggested.

Adult