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Normative data for the digit-letter substitution task in school children.
1Division of Yoga and Life Sciences, Swamy Vivekananda Yoga Anusandhana Samsthana, Bangalore, India.
International Journal of Yoga
|September 16, 2010
Summary
This study establishes norms for the Digit-Letter Substitution Task (DLST), a psychomotor performance measure. Normative data, considering age and sex, will enhance clinical use of the DLST in India.
Area of Science:
- Neuroscience
- Psychology
- Human Performance
Background:
- The Digit-Letter Substitution Task (DLST) is a key measure of psychomotor performance.
- Establishing normative data is crucial for accurate interpretation of DLST results.
Purpose of the Study:
- To establish age and sex-specific norms for the Digit-Letter Substitution Task (DLST) in a school-aged population.
- To provide a foundation for the wider clinical application of the DLST in India.
Main Methods:
- A cohort of 843 school students aged 9-16 years participated.
- Each student's performance on the Digit-Letter Substitution Task (DLST) was assessed individually.
Main Results:
- Performance on the DLST was significantly influenced by both age and sex.
- Correction scores were derived to account for these demographic factors.
Conclusions:
- The developed Indian normative data for the DLST will facilitate its broader use in clinical settings.
- This standardization is essential for reliable psychomotor assessment in diverse populations.

