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Original
Article
Indian adaptation of the Cognistat : Psychometric properties of a cognitive
screening tool for patients of traumatic brain injury
Ashum Gupta PhD, Natasha Khullar Kumar M Sc
Department
of Psychology, University of Delhi, Delhi-110 007
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Abstract
The present study was aimed at adapting the cognitive screening
tool ‘Cognistat’ (Neurobehavioral Cognitive Status Exam) for use
with the Indian community. As a part of the Indian adaptation of
the test, the ‘screen and metric’ approach of assessment was eliminated.
However, the screening item of the construction sub-test has been
retained as a separate sub-test for evaluating immediate visual
memory. Culturally irrelevant test items were identified under the,
repetition, naming, memory, similarities and judgment sub-tests.
Changes were made to these items on the basis of recommendation
of 7 psychologists of Indian origin. The psychometric properties
of the scale were evaluated in a sample of 30 patients with Traumatic
Brain Injury (TBI) and 55 demographically matched healthy controls.
The internal consistency of the test was high (Cronbach’s alpha
= 0.94). The test was found to have acceptable inter- rater and
test-retest reliability. The concurrent validity of the test was
established by comparing the performance of patients on MMSE and
sub-tests of the Indian adaptation of Cognistat The test was found
to have high discriminative validity as there was a significant
difference in the performance of patients and controls on all subtests
(p<.001). The adaptation of Cognistat provides the Indian population
with a highly valuable cognitive screening tool.
Keywords
Cognistat, Indian Adaptation, Traumatic Brain Injury
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Address for correspondence:
Prof. (Ms.)
Ashum Gupta
C-31 (29-31) Probyn Road
Delhi University Flats, Mall Road, Delhi.
Ph:011- 2662278, 9871370107
E-mail : dr_ashumgupta@yahoo.com
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