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Preliminary Rasch Construct and Reliability Validation of TeleWrite: A Telehealth-Based Handwriting Assessment
Julia M Guzmán1, Lenin C Grajo2
1Columbia University, New York, USA.
Background:
Telehealth is rapidly expanding, and telehealth-based occupational therapy assessments must be developed and validated to keep pace with this transition. TeleWrite aims to bridge this gap.
Objectives:
To analyze the tool's initial psychometric properties using Rasch methods.
Method:
Internal construct validity and test reliability were analyzed using data from 148 children from first to third grade.
Results:
Rasch analysis helped to identify that TeleWrite is composed of three separate constructs for rate, accuracy, and fluency. All Infit/Outfit mean square (MNSQ) values fell within acceptable ranges of 0.5 to 1.7 logits. Separation analysis indicated lower but acceptable person separation values for rate (0.68-0.76) and fluency (0.61-0.73), but accuracy scales were in the poor-fair range (0.20-0.60), given sample limitations.
Conclusion:
TeleWrite is comprised of three separate constructs, showed a good fit with the Rasch model, indicated strong construct and internal validity, and moderate ability to reliably separate abilities of students in terms of handwriting skills.
