Akademik Veri Yönetim Sistemi
2010 International Conference on Behavioral, Cognitive and Psychological Sciences, Singapore, Singapur, 26 - 28 Şubat 2010, ss.64-68
Purpose: The aim of this study was to explore the potential of Computerized Adaptive Testing (CAT) for measuring cognitive impairment in patients with acquired brain injury. Methods: 294 patients with acquired brain injury answered some questions from 3 cognitive assessment questionnaires (the Mini-Mental State Examination, the Middlesex Elderly Assessment of Mental State, and the Rivermead Behavioural Memory Test). After exploratory factor analysis and Rasch analysis, a 33-item cognitive impairment item bank was developed. Using this item bank, several simulated computerized adaptive tests (CATs) were developed and their results checked against simulated applications from 1.000 simulees. Results: The cognitive impairment. status levels generated using item bank and those obtained from the simulated CAT applications were highly correlated. Correlations between each CAT condition and scores based on a 33-item cognitive impairment item bank have ranged from 0.89 to 0.93. CATs with even fewer items also produced scores that were highly correlated with scores based on all items. For example, scores from a 5-item CAT had a correlation of 0.89 with 33-item item bank scores. Conclusion: This study showed that the burden of this assessment of cognitive impairment with respect to the number of items administered can be reduced by the application of a CAT procedure. Therefore, a CAT-based cognitive impairment item bank can be a valuable tool for use in clinical and research contexts.