Item difficulty of the tactual performance test location score

Area of Science:

• Neuropsychology
• Cognitive Assessment
• Psychometrics

Background:

• The Tactual Performance Test (TPT) is a neuropsychological tool used to assess tactile and spatial abilities.
• Accurate psychometric properties are crucial for reliable cognitive assessment.
• Previous item analysis of the TPT Location score did not account for memory accuracy.

Purpose of the Study:

• To present item difficulty and discrimination index values for the Tactual Performance Test Location score.
• To introduce a refined item analysis method for the TPT Location score, incorporating memory accuracy.
• To enhance the psychometric validity of the TPT Location score.

Main Methods:

• Item analysis was conducted on the Tactual Performance Test Location score.
• Subject Location scores were included only if the block was correctly remembered.
• Difficulty and discrimination indices were calculated based on this refined criterion.

Main Results:

• Item difficulty and discrimination index values for the TPT Location score were determined.
• The refined analysis, using only correctly remembered blocks, provides a more accurate psychometric profile.
• This methodological adjustment addresses limitations in previous TPT Location score analyses.

Conclusions:

• The updated item analysis provides more precise psychometric data for the TPT Location score.
• This refinement is essential for accurate interpretation of TPT results in clinical and research settings.
• Future research should adopt this memory-corrected approach for TPT Location score analysis.