Discussion & Conclusions: The current results were consistent with those from Waters and Caplan (2003), reporting composite measure increased stabilities and reliabilities for the working memory measures and all of the working memory tasks loaded onto a single factor. You can also increase the span of digits displayed to increase test challenge. A principal component analysis revealed that the one-factor solution accounted for 66% of the total variance for four different working memory pointing tasks. Choose Forward or Reverse (backwards) for each test. The Digit Span Test The Digit Span Test is a subtest of the. As short-term memory measures, digit and word forward pointing span measures were highly correlated (r=0.79). and data obtained in individuals who are 35 or older may be difficult to interpret. Concurrent validity results suggested that the pointing version of the digit span measures shared only 25~40% of the total variance with the standardized measure of the digit span-recall. However, test-retest reliabilities increased up to 0.86 when a composite measure was used with a combination of at least two different tasks. Results The test-retest reliability results revealed that the range of Pearson’s correlation coefficients was 0.43~0.77. This is a verbal task, with stimuli presented auditorily, and responses spoken by the participant and scored automatically by the software. Fifty-five normal individuals participated in the study and performed all of the tasks. Digit Span (DGS) is a measure of verbal short term and working memory that can be used in two formats, Forward Digit Span and Reverse Digit Span. An alphabet pointing span task and a subtract-2 pointing span measure were developed as working memory tasks. Methods Digit forward and backward pointing span measures were developed by adapting the most commonly used digit forward/backward recall tasks to pointing measures. The specific aim of the study was to examine psychometric properties such as test-retest reliability, concurrent and construct validity, and internal item consistency in newly developed pointing span measures. The current study developed pointing span measures that do not require verbal output and thus can be used to assess short-term and working memory capacities in special populations with verbal-output deficits. However, there are limitations to the employment of short-term and working memory tasks developed for assessing normal cognitive processing for the evaluation of speech and/or language-impaired clinical populations. Measures of forward and backward digit span (DS) are among the oldest and most widely used neuropsychological tests of short-term verbal memory (Richardson. The Reliability and Validity of Short-term and Working Memory Pointing Tasks Developed for Clinical Populations with Speech and Language DisordersĬopyright ©2011 The Korean Academy of Speech-Language Pathology and Audiologyīackground & Objectives Short-term and working memory capacity theories have gained considerable attention as underlying cognitive mechanisms, deficiencies in which may account for language processing difficulties in individuals with speech and language disorders.
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