- #WESCHLER INTELLIGENCE SCALE BACKWARD DIGIT SPAN MANUAL#
- #WESCHLER INTELLIGENCE SCALE BACKWARD DIGIT SPAN PLUS#
Digit Span Sequencing was significantly different in each group (DAT < aMCI < SCC), with a high rate of the DAT group showing cross-task perseveration. Results: Those with DAT performed significantly worse for DS Forward, Backward, and Total Score versus those with aMCI and SCC, whose performances were similar. This resulted in a sample of 290 individuals with DAT, 255 with aMCI, and 161 with SCC. Method: Seven hundred and six individuals were drawn from 1256 consecutive referrals who underwent a standard neuropsychological evaluation and obtained a consensus diagnosis from a neuropsychologist and a neurologist of DAT, aMCI, or having SCC. This study examines performance on DS for individuals from a memory disorder clinic diagnosed with amnestic mild cognitive impairment (aMCI), probable dementia of the Alzheimer type (DAT), or those with subjective cognitive complaints (SCC). Both poorer DSS performance and the presence of perseveration can offer useful clinical information on the context of a thorough evaluation of the aMCI/DAT spectrum.Ībstract = "Objective: The Digit Span (DS) subtest from the Wechsler Adult Intelligence Scale-4th Edition (WAIS-IV) was updated to better measure working memory which is potentially clinically relevant as prior unreplicated studies showed that sequencing tasks differentiated normal from neurologic groups. Discontinuation of DSS due to cross-task perseveration was frequently seen in, although not unique to, the DAT group. Conclusions: The DS sequencing results differed between the three clinical groups, which is consistent with the hypothesis that working memory declines would be evident on this measure.
#WESCHLER INTELLIGENCE SCALE BACKWARD DIGIT SPAN PLUS#
The average digit span for normal adults without error is seven plus or minus two.Objective: The Digit Span (DS) subtest from the Wechsler Adult Intelligence Scale-4 th Edition (WAIS-IV) was updated to better measure working memory which is potentially clinically relevant as prior unreplicated studies showed that sequencing tasks differentiated normal from neurologic groups. This task requires fine motor skills (using a pencil) but does not require expressive language. Keeping this in view, what does coding measure on the WAIS IV?Ĭoding measures visual processing speed, short-term visual memory, and the ability to shift the eyes efficiently back and forth between the “key” and the responses. Backward span is an executive task particularly dependent on working memory. Forward span captures attention efficiency and capacity. What is Digit Span sequencing? Digit Span Subjects are read a sequence of numbers and asked to repeat the same sequence back to the examiner in order (forward span) or in reverse order (backward span). A visuo-spatial analogue is the 'Corsi Block-tapping test'. Random sequences of numbers are read aloud and have to be reproduced by the subject in forward or backward order. Similarly one may ask, what does the digit span subtest measure?Ī common test for measuring attentional capacity is ' Digit span,' a subtest of the 'Wechsler Intelligence Scale'.
15), Digit Span Forward is described as a test involving “attention, encoding and auditory processing,” while the term WM is reserved for the Back- ward and Sequencing tasks as well as the Letter-Number Sequencing subtest.
#WESCHLER INTELLIGENCE SCALE BACKWARD DIGIT SPAN MANUAL#
In the technical and interpretative manual of the WAIS- IV (Wechsler, 2008, p.
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