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Digit Memory Test (DMT)
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About Digit Memory Test (DMT)
Scale Name
Digit Memory Test (DMT)
Author Details
Martin Turner and Jacky Ridsdale
Translation Availability
Not Sure
Background/Description
The Digit Memory Test (DMT) is a widely used cognitive assessment tool that measures short-term and working memory capacity. It requires participants to recall sequences of numbers (digits) after brief exposure, testing their ability to retain and process information in the short term. This test is essential for evaluating cognitive functions such as attention, memory span, and mental manipulation, which are crucial for daily activities, learning, and problem-solving.
Originally designed as part of larger intelligence and cognitive tests (such as the Wechsler Adult Intelligence Scale), the Digit Memory Test has become a standalone measure for both research and clinical purposes. The test is commonly used in neuropsychological assessments to diagnose cognitive impairments, learning disabilities, attention-deficit disorders, and other memory-related issues. It is also frequently used in research settings to study memory performance across age groups, educational backgrounds, and clinical populations.
Administration, Scoring and Interpretation
- Target Population: Suitable for individuals from childhood to older adulthood, including those with suspected memory impairments.
- Format:
- Digit Span Forward: The test administrator reads a sequence of digits aloud, and the participant is asked to repeat them in the exact order. The number of digits increases progressively as the test continues.
- Digit Span Backward: In this version, the participant is asked to recall the digits in reverse order.
- Test Procedure:
Reliability and Validity
The Digit Memory Test is considered a highly reliable and valid measure of short-term and working memory. It has been standardized in numerous studies, demonstrating high internal consistency and test-retest reliability across different populations. The DMT correlates well with other memory and cognitive measures, such as the Wechsler Memory Scale, providing further evidence of its validity.
Research has confirmed that performance on the Digit Memory Test is influenced by factors such as age, education, and cognitive functioning, making it a useful tool for diagnosing memory deficits in clinical settings and understanding memory performance in research contexts.
Available Versions
Multiple-Items
Reference
Jrab, M. (2015). Teachers’ Perception of Students with Disruptive Behavior and Poor Working Memory (Doctoral dissertation, Lebanese American University).
Turner, M., & Ridsdale, J. (2004). The digit memory test. Dyslexia Int.
Turner, M. & Ridsdale, J. (2004). The Digit Memory Test. Retrieved from
http://dyslexia-international.org/Digitspan.pdf
Important Link
Scale File:
Frequently Asked Questions
Q: What is the Digit Memory Test (DMT)?
A: The DMT is a cognitive test that measures short-term and working memory by requiring individuals to recall sequences of digits presented to them in either forward or backward order.
Q: How is the test administered?
A: The test is administered by reading aloud a series of digits to the participant, who must then recall them in the correct order (forward or backward).
Q: What is the difference between forward and backward digit span?
A: Forward digit span measures the ability to recall digits in the order presented, while backward digit span tests the ability to recall digits in reverse order.
Q: What cognitive functions does the DMT assess?
A: The DMT assesses short-term memory, working memory, attention, and cognitive flexibility.
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