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Biomedical subjects

J Bochner

Publications and source records attributed to J Bochner.

7 recordsLinked to original sources
PubMed1997

Valid assessment of writing and access to academic discourse.

One way to improve students' access to and retention in post-secondary degree progams is to assess their readiness for such programs accurately. To place deaf and hard-of-hearing students in preparatory courses and to determine their readiness for degree programs more accurately, a direct measure of writing was developed for deaf and hard-of-hearing students at a large technical university. The purpose of this study was to estimate the concurrent and predictive validity of this measure. The Test of Written English (Educational Testing Service, 1992) served as the criterion in the concurrent validity study, and student success in the university's gateway freshman composition course served as the criterion in the predictive validity study. Results provide evidence of the concurrent and predictive validity of the measure, supporting its use for course placement and early planning purposes.

Journal Article↗
PubMed1997

A computerized adaptive testing system for speech discrimination measurement: the Speech Sound Pattern Discrimination Test.

A computerized, adaptive test-delivery system for the measurement of speech discrimination, the Speech Sound Pattern Discrimination Test, is described and evaluated. Using a modified discrimination task, the testing system draws on a pool of 130 items spanning a broad range of difficulty to estimate an examinee's location along an underlying continuum of speech processing ability, yet does not require the examinee to possess a high level of English language proficiency. The system is driven by a mathematical measurement model which selects only test items which are appropriate in difficulty level for a given examinee, thereby individualizing the testing experience. Test items were administered to a sample of young deaf adults, and the adaptive testing system evaluated in terms of respondents' sensory and perceptual capabilities, acoustic and phonetic dimensions of speech, and theories of speech perception. Data obtained in this study support the validity, reliability, and efficiency of this test as a measure of speech processing ability.

Adolescent↗
PubMed1996

Validity of indirect assessment of writing competency for deaf and hard-of-hearing college students.

Indirect tests of writing competency are often used at the college level for a variety of educational, programmatic, and research purposes. Although such tests may have been validated on hearing populations, it cannot be assumed that they validly assess the writing competency of deaf and hard-of-hearing students. This study used a direct criterion measure of writing competency to determine the criterion validity of two indirect measures of writing competency. Results suggest that the validity of indirect writing tests for deaf and hard-of-hearing baccalaureate-level students is weak. We recommend that direct writing tests be used with this population to ensure fair and accurage assessment of writing competency.

Journal Article↗
PubMed1992

Simple discrimination isn't really simple. A confirmatory analysis of the Speech Sound Pattern Discrimination Test.

This paper reports the results of a componential analysis of items comprising the Speech Sound Pattern Discrimination Test (SSPDT). The SSPDT, developed by Bochner et al. (1986), uses a closed-set sentence discrimination task to assess the auditory speech processing skill of severely and profoundly hearing-impaired individuals. A set of components reflecting differences in the phonetic and task-related characteristics of the test stimuli was developed, and the contributions of the components to discrimination task difficulty were evaluated using linear regression methodology. Discrimination task difficulty indices were transformations of percent-correct scores, resulting from fit of the SSPDT data to the Rasch measurement model. Three of the hypothesized components (one spectral, one temporal, and one task-related) entered a stepwise regression solution. These components have an intrinsic role in the construct validity of the instrument. The structure of the discrimination task, however, is more complex than might be suspected, because 'same' or matching test stimuli showed advantages in ease of discriminability compared with their 'different' or non-matching counterparts. The study findings will facilitate development of an enlarged item bank, and aid in the interpretation of test scores.

Adult↗
PubMed1988

A new protocol for assessing viseme perception in sentence context: the lipreading discrimination test.

Forty-six hearing-impaired young adults were tested with a newly developed instrument that requires a discrimination response to assess viseme perception as a component of lipreading performance. Stimuli were videotaped sentences that differed on half of the trials from a captioned target sentence by one viseme embedded in the middle of the sentence. Discrimination within six visual categories was tested: gross syllable pattern, consonant articulation--lips, consonant articulation--tongue, vowel articulation--extreme lip shapes, vowel articulation--graded lip shapes, and vowel articulation--jaw movement. Test data were analyzed using an item response theory model. The results indicated that the test data conformed to the expectations of the Rasch model for person measurement. Relationships among subjects' test scores and communication characteristics also were examined. The data provide evidence that the test protocol, at this early stage of development, is useful for assessing at least one perceptual component of lipreading performance.

Adult↗
PubMed1986

A closed-set sentence protocol for assessing speech discrimination in deaf individuals: the speech sound pattern discrimination test.

Forty hearing-impaired young adults were tested with a newly developed instrument designed to assess auditory speech processing skill. Analyses indicated that the resulting test data could be characterized in terms of the Rasch model for person measurement. Evidence of the scale's empirical validity also was obtained. The instrument uses a closed-set sentence discrimination task, and appears to be useful over a fairly wide range of hearing losses.

Adult↗