Reliability and validity of culturally adapted executive function performance test for Thai people with substance-induced disorders

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Sutinun Juntorn
Peeradech Thichanpiang
Thitiya Wangkawan
Supalak Khemthong
Narumon Phinmueangthong
Anuchart Kaunnil


Background: Recently, the executive function assessment tools in Thailand are mainly administered as the bottom-up approach using separate tasks of client skills more than as the top-down approach using activities in daily life contexts. These bottom-up assessments are focused on the components of executive function which are not relevant to client’s participation in real situations.

Objectives: The aims of this study were to develop and appraise the standardization of Executive Function Performance Test in Thai version (EFPT-Th) which was culturally adapted as the performance-based executive function tests for Thai contexts.

Materials and methods: Back-translation process and expert’s agreement were introduced to develop EFPT-Th. Thirty participants diagnosed with substance-induced disorders were recruited to examine the internal consistency, intra-rater reliability and inter-rater reliability. Moreover, the criterion validity was analyzed by the correlation with Behavioral Assessment of the Dysexecutive Syndrome (BADS).

Results: The internal consistency of EFPT-Th was considered to be acceptable (Cronbach’s alpha=0.72). For intra-rater and inter-rater reliability of EFPT-Th total score demonstrated high level of coefficients (ICC=0.98 and 0.88, respectively). The criterion validity of EFPT-Th was reported significantly high negative correlations between the total EFPT-Th scores and the BADS total profile scores (r=-0.63, p<0.01).

Conclusion: The present study provides that EFPT-Th is the performance-based test of executive function which is culturally appropriate adaptation for Thai contexts. EFPT-Th also could be the benefit to occupational therapists to evaluate the executive function and determine the level of assistance for clients with executive dysfunction to engage in the instrumental activities or complex daily tasks.


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Juntorn, S., Thichanpiang, P., Wangkawan, T., Khemthong, S., Phinmueangthong, N., & Kaunnil, A. (2020). Reliability and validity of culturally adapted executive function performance test for Thai people with substance-induced disorders. ournal of ssociated edical ciences, 54(1), 35-43. etrieved from
Occupational Therapy


UNODC. World Drug Report 2017 [Available from:

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