Could test length or order affect scores on letter number sequencing of the WAIS-III and WMS-III? Ruling out effects of fatigue.
The Letter Number Sequencing subtest of the WAIS-III and WMS-III was administered at the end of the standardization edition of the WMS-III. It was not administered as part of the WAIS-III standardization battery. Nevertheless, the subtest was included in the published version of the WAIS-III. This study examines differences between examinees administered the Letter Number Sequencing subtest at three different times during a psychological battery: (1) as part of the published battery, (2) as part of the WMS-III when the WMS-III was administered as the first test in a sequence, and (3) as part of the WMS-III standardization when the WAIS-III was administered immediately preceding the WMS-III. The participants were 372 examinees ( n = 124 in each condition) who were matched on key demographic variables. A repeated measures MANOVA yielded no difference in subtest scores when administered in any of these conditions. The results show no evidence of fatigue or ordering effects on the Letter Number Sequencing subtest.
Kessler Medical Rehabilitation Research and Education Corporation, West Orange, NJ, USA. dtulsky@kmrrec.org
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Tulsky
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Zhu
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005221:Fatigue; D006801:Humans; D008875:Middle Aged; D013997:Time Factors; D014888:Wechsler Scales