What does Digit Span on the WAIS IV measure?
In the technical and interpretative manual of the WAIS- IV (Wechsler, 2008, p. 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.
What is a normal digit span?
The average digit span for normal adults without error is seven plus or minus two. However, memory span can be expanded dramatically – in one case to 80 digits – by learning a sophisticated mnemonic system of recoding rules by which substrings of 5 to 10 digits are translated into one new chunk.
How is Wais reliable digit span calculated?
Reliable Digit Span is calculated by summing the longest string of digits repeated without error over two trials under both forward and backward conditions.
How do you find a Digit Span?
The digit span test consists of telling the person that you are going to give him a short test. The person is then told to listen carefully because you will say a series of numbers and ask him to repeat them back to you in the same order you say them.
What Are Digit Span tasks?
The Digit Span Task is a simple behavioral measure of working memory capacity, the cognitive ability to store and manage information on a transient basis. The dependent measure, digit span, is the maximum number of digits correctly recalled.
Is WAIS IV accurate?
Reliability and Validity The Wechsler Adult Intelligence is a well-established scale and it has fairly high consistency. Over a two to twelve week time period, the test-retest reliabilities ranged from 0.70 (7 subscales) to 0.90 (2 subscales). Inter-scorer coefficients were very high, all being above 0.90.
How is Rd calculated on WAIS IV?
RDS is calculated by using the Longest Digit Span Forward (LDSF) and Longest Digit Span Backward (LDSB) on the WAIS [20].
What is backward digit span?
Digit Span Forward requires the child to repeat numbers in the same order as read aloud by the examiner, and Digit Span Backward requires the child to repeat the numbers in the reverse order of that presented by the examiner.
https://www.youtube.com/watch?v=aFBqYXPJJak