The present study examined the comparability of 4 alternate forms of the Digit Symbol
Substitution test and the Symbol Digit Modalities (written) test, including the original …

A longitudinal examination of the comparability of two alternate versions of the Symbol Digit
Modalities Test (SDMT) was undertaken on a large (N= 3,509), multiregional, healthy male …

This paper presents a summary of major research findings relevant to the use of the
Wechsler Digit Span subtest in psychoeducational assessment. Examination of the research …

Abstract" This study explored the effect of certain modifications in administration and scoring
on the test-retest reliability of the digit span. These modifications consisted of:(a) Having S …

Abstract The Symbol Digit Modalities Test [SDMT; Smith, A.(1982). Symbol Digit Modalities
Test. Los Angeles: Western Psychological Services; Smith, A.(1968). The symbol-digit …

Although Wechsler's decision to combine the Digits Forward and Digits Backward sections
of the Digit Span subtest of the WISC (and WISC‐R) was justifiable regarding their utilization …

counterbalancing the order of presentation of the tests. The learning test was made more
similar to the actual learning situation on the DS than that achieved by Burik using the …

Abstract The Symbol Digit Modalities Test (SDMT) is a widely used instrument to assess
information processing speed, attention, visual scanning, and tracking. Considering that …

A decline in performance on the Digit Symbol Substitution test related to aging is well
documented. There is no agreement on the reason for the decline, however. In part, the lack …

Abstract 45 persons (aged 19–74 yrs) referred for neuropsychological evaluation were
administered both the Symbol Digit Modalities Test (SDMT) and the Digit Symbol (DS) …