Date of Award

5-1-1975

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Communication Sciences & Disorders

Abstract

The purpose of the study was to compare scores obtained on the two subtests comprising the Goldman-Fristoe-Woodcock Test of Auditory Discrimination (GFW) to determine test-retest reliability and internal reliability of the GFW.

Twenty-three subjects between the ages of six years, six months to ten years, three months previously identified as exhibiting a learping disability (LD) were matched by age levels with twenty-three subjects identified as exhibiting normal learning abilities (NL) . These two groups were administered the Quiet and Noise Subtest of the GFW followed by a retest within seven days.

Statistical analysis of the test-retest scores of the Quiet Subtest of the GFW yielded significant coefficients of .78 with the NL groups and .73 with the LD group. Coefficients of internal consistency were .41 for the initial administration of this subtest with the NL group and .39 for the retest. Performance of the LD group revealed a coefficient of .61 on the initial administration and .51 on the retest. Results of the study indicated that the Quiet Subtest of the GFW was a reliable instrument with these study groups.

Statistical analysis of the Noise Subtest yielded coefficients of .21 with the NL group and .36 with the LD group between the test- retest. A significant difference at the .05 level of confidence was indicated between mean scores for the test-retest of the NL group and the difference between mean scores of the LD group were significant at the .01 level of confidence. Coefficients of internal consistency showed correlations of .49 with the NL group and .47 with the LD group on the initial administration of the Noise Subtest. However, the retest revealed relationships of only .05 for the NL group and .12 for the LD group. These coefficients would indicate that the Noise Subtest has no substantial internal consistency. These results as well as the low correlation between the test-retest indicate the Noise Subtest of the GFW was not a reliable instrument with these study groups.

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