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ERIC Number: ED530936
Record Type: Non-Journal
Publication Date: 2009
Pages: 142
Abstractor: As Provided
Reference Count: 0
ISBN: ISBN-978-1-1095-1373-8
Psychometric Properties and Rater Effects of the Computer Adaptive Test of Functional Cognition for Traumatic Brain Injury
Wen, Pey-Shan
ProQuest LLC, Ph.D. Dissertation, University of Florida
Individuals with moderate to severe TBI often need extensive rehabilitation. To verify the effectiveness of intervention and design rehabilitation programs that meet individual's needs, precise and efficient outcome measures are crucial. Current assessments for TBI either focus on measuring impairments, such as neuropsychological tests or lack of breadth and depth, such as functional outcome measures. A comprehensive, ecological valid, precise, inexpensive, and efficient assessment for TBI is needed. Using traditional measurement technology to develop a comprehensive, precise and efficient assessment is impractical. To avoid creating gaps in precision, the ideal measure needs to encompass enough items to cover all relevant levels of examinees' ability. Accordingly, a large number of items need to be answered, which compromises efficiency. However, contemporary methods, such as item response theory (IRT) and computer adaptive testing (CAT), have the ability to maximize precision and, at the same time, minimize response burden. CAT only directs the items related to respondent's ability level (most informative items) to respondent. Since only the most informative items will be direct to respondent, CAT methods provide efficient measurement without losing precision. The Computer Adaptive Measure of Functional Cognition for Traumatic Brian Injury (CAMFC-TBI) uses contemporary methods (IRT and CAT) to overcome the disadvantage of traditional measurement technology and addresses the drawbacks of current measures. The aim of this proposal is to conduct the fundamental work to move the CAMFC-TBI item pool to an item bank for a CAT application. The psychometric studies showed that the CAMFC-TBI is a sound functional outcome measurement test battery for TBI. Future studies should further confirm the structure of the CAMFC-TBI using larger sample sizes. In addition, CAT version of the test battery should accommodate rater effects. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page:]
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Publication Type: Dissertations/Theses - Doctoral Dissertations
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A