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An approach to analyzing a single subject's scores obtained in a standardized test with application to the Aachen Aphasia Test (AAT).
J Clin Exp Neuropsychol. 1985 Aug; 7(4):331-52.JC

Abstract

Methods for the analysis of a single subject's test profile(s) proposed by Huber (1973) are applied to the Aachen Aphasia Test (AAT). The procedures are based on the classical test theory model (Lord & Novick, 1968) and are suited for any (achievement) test with standard norms from a large standardization sample and satisfactory reliability estimates. Two test profiles of a Wernicke's aphasic, obtained before and after a 3-month period of speech therapy, are analyzed using inferential comparisons between (groups of) subtest scores on one test application and between two test administrations for single (groups of) subtests. For each of these comparisons, the two aspects of (i) significant (reliable) differences in performance beyond measurement error and (ii) the diagnostic validity of that difference in the reference population of aphasic patients are assessed. Significant differences between standardized subtest scores and a remarkably better preserved reading and writing ability could be found for both test administrations using the multiple test procedure of Holm (1979). Comparison of both profiles revealed an overall increase in performance for each subtest as well as changes in level of performance relations between pairs of subtests.

Authors

No affiliation info available

Pub Type(s)

Case Reports
Journal Article

Language

eng

PubMed ID

2411756

Citation

Willmes, K. "An Approach to Analyzing a Single Subject's Scores Obtained in a Standardized Test With Application to the Aachen Aphasia Test (AAT)." Journal of Clinical and Experimental Neuropsychology, vol. 7, no. 4, 1985, pp. 331-52.
Willmes K. An approach to analyzing a single subject's scores obtained in a standardized test with application to the Aachen Aphasia Test (AAT). J Clin Exp Neuropsychol. 1985;7(4):331-52.
Willmes, K. (1985). An approach to analyzing a single subject's scores obtained in a standardized test with application to the Aachen Aphasia Test (AAT). Journal of Clinical and Experimental Neuropsychology, 7(4), 331-52.
Willmes K. An Approach to Analyzing a Single Subject's Scores Obtained in a Standardized Test With Application to the Aachen Aphasia Test (AAT). J Clin Exp Neuropsychol. 1985;7(4):331-52. PubMed PMID: 2411756.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - An approach to analyzing a single subject's scores obtained in a standardized test with application to the Aachen Aphasia Test (AAT). A1 - Willmes,K, PY - 1985/8/1/pubmed PY - 2000/3/29/medline PY - 1985/8/1/entrez SP - 331 EP - 52 JF - Journal of clinical and experimental neuropsychology JO - J Clin Exp Neuropsychol VL - 7 IS - 4 N2 - Methods for the analysis of a single subject's test profile(s) proposed by Huber (1973) are applied to the Aachen Aphasia Test (AAT). The procedures are based on the classical test theory model (Lord & Novick, 1968) and are suited for any (achievement) test with standard norms from a large standardization sample and satisfactory reliability estimates. Two test profiles of a Wernicke's aphasic, obtained before and after a 3-month period of speech therapy, are analyzed using inferential comparisons between (groups of) subtest scores on one test application and between two test administrations for single (groups of) subtests. For each of these comparisons, the two aspects of (i) significant (reliable) differences in performance beyond measurement error and (ii) the diagnostic validity of that difference in the reference population of aphasic patients are assessed. Significant differences between standardized subtest scores and a remarkably better preserved reading and writing ability could be found for both test administrations using the multiple test procedure of Holm (1979). Comparison of both profiles revealed an overall increase in performance for each subtest as well as changes in level of performance relations between pairs of subtests. SN - 1380-3395 UR - https://www.unboundmedicine.com/medline/citation/2411756/An_approach_to_analyzing_a_single_subject's_scores_obtained_in_a_standardized_test_with_application_to_the_Aachen_Aphasia_Test__AAT__ L2 - https://www.tandfonline.com/doi/full/10.1080/01688638508401268 DB - PRIME DP - Unbound Medicine ER -