Biomedical subjects

J C Sever

Publications and source records attributed to J C Sever.

5 recordsLinked to original sources

PubMed1990

An examination of two procedures for assessing the speech perception of phonologically disordered children.

Speech perception is an important variable in children's production of speech sounds, yet commercially available tests of speech-sound discrimination have been criticized for their lack of validity and clinical value. The present study was undertaken to examine two alternative procedures for assessing children's perception of their own error sounds to determine if the procedures have clinical applicability and if they elicit comparable results. Implications of results are discussed.

Articulation Disorders↗

PubMed1990

Using the binomial model to evaluate speech-discrimination scores obtained during background noise.

This study was designed to investigate the variability in performance frequently observed when speech discrimination is assessed in the presence of background noise. Using the binomial distribution, analysis suggests variability is substantial, so speech discrimination scores obtained in noise should be interpreted with caution.

Adult↗

PubMed1989

Relationship between two nontraditional procedures for assessing speech-sound discrimination.

Test of speech-sound discrimination are used by special educators, reading specialists and speech-language pathologists in assessing children's ability to differentiate between speech sounds occurring in standard English. Such tests are important in determining if speech-sound articulation errors are caused by difficulty in making such differentiations. However, during the past 10 years, these tests have been criticized on the basis of their reliability and validity. The purpose of this study was to examine the use of two alternative methods of assessing speech-sound discrimination with a school-aged population to determine if they elicited responses in a similar manner.

Child↗

PubMed1989

Using a self-assessment questionnaire to identify probable hearing loss among older adults.

The present study was designed to investigate a protocol to facilitate identification of probable hearing loss among 59 older adults (ages 60 to 84 yr.) using the Hearing Handicap Inventory for the Elderly--Screening Version, a self-assessment questionnaire. Analysis suggests the scale has excellent potential for identifying hearing loss among older adults.

Aged↗

PubMed1979

Binaural critical masking bands.

Current understanding of the relation monaural estimates of the critical bandwidth for masking and those obtained in binaural listening situations is poor. The present study was designed to improve this situation by obtaining estimates of critical bandwich when the signal and masker were presented: (1) monaurally (NmSm), (2) binaurally with both signal and masker in phase at the ears (NoSo), (3) binaurally with masker in phase and signals 180 degrees out of phase (NoSpi). Threshold estimates were obtained in a two-interval forced-choice paradigm as a function of masker bandwidth for signal frequencies of 500 and 2000 Hz for the three conditions mentioned above. Maskers were computer-synthesized and had essentially infinite rejection slopes. For all conditions, as masker bandwidth was narrowed from wide band, threshold remained relatively constant until some critical bandwidth was reached. Further reductions in bandwidth were followed by progressive lowering of threshold, presumably due to removal of masker energy in the critical band. For both signal frequencies, the derived critical bandwidth estimates for the NmSm and NoSo conditions were similar and were smaller than the critical bandwidth estimates obtained in the NoSpi condition.

Adult↗