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Published on: January 24, 2020
The K-T cancellation test in the older adults: Normative data and construct validity
Ya-Huei Wu1, Jocelyne de Rotrou, Jean-Sébastien Vidal
1a Assistance Publique-Hôpitaux de Paris, Service de Gérontologie Clinique, Hôpital Broca, Paris, France. yahuei.wu@brc.aphp.fr
Summary
This study established normative data for the K-T test, a cognitive assessment tool. Findings support its use in detecting executive function impairments in older adults.
Area of Science:
- Gerontology
- Neuropsychology
- Cognitive Science
Background:
- Establishing reliable cutoff scores is crucial for distinguishing normal cognition from dementia.
- Standardized cancellation tests aid in assessing cognitive functioning.
- The K-T test is a standardized cancellation test requiring investigation for normative data.
Purpose of the Study:
- To establish normative data for the K-T test in a large cohort of cognitively intact elderly subjects.
- To investigate the construct validity of the K-T test.
- To provide stratified normative data based on age, education, and gender.
Main Methods:
- Utilized data from 2471 cognitively intact elderly participants in the SU.VI.MAX 2 study.
- Analyzed correct answers, omission errors, and commission errors.
- Performed correlation analysis with validated neuropsychological tests of executive functions.
Main Results:
- Younger age, female gender, and higher education were associated with more correct answers and fewer omission errors.
- Educational level significantly impacted commission errors.
- The K-T test demonstrated significant correlations with executive function tests.
Conclusions:
- Normative data for the K-T test were established and stratified by age, education, and gender.
- The K-T test shows strong construct validity and utility in assessing executive functions.
- This research supports the K-T test's role in identifying cognitive impairments related to executive function.
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