Impaired National Adult Reading Test (NART) performance in traumatic brain injury |
| |
Authors: | Clive Skilbeck Tracey Dean Matt Thomas Mark Slatyer |
| |
Affiliation: | 1. School of Psychology , University of Tasmania , Tasmania , Australia;2. Royal Hobart Hospital , Hobart , Tasmania , Australia clive.skilbeck@utas.edu.au;4. School of Psychology , University of Tasmania , Tasmania , Australia;5. School of Psychology , Charles Sturt University , Bathurst , New South Wales , Australia;6. Royal Hobart Hospital , Hobart , Tasmania , Australia |
| |
Abstract: | Some research suggests the National Adult Reading Test (NART) may be impaired by traumatic brain injury (TBI). To investigate this, a prospective, longitudinal study included 214 Australian TBI participants given the NART within 1 month post-injury, and at 6 and 12 months. TBI severity, age, education, sex, and mood (HADS) were examined, and significant improvement in NART- estimated full-scale IQ (FSIQ) was noted over time (p?.001). A three-way interaction of time, severity, and age showed younger and middle-aged mild TBI sub-groups improved significantly between 1 and 6 months post-injury, and the older sub-group between 6 and 12 months. In severe TBI, significant NART-estimated FSIQ improvement was noted only for the middle-aged and only between 6 and 12 months post-TBI. NART administration soon after TBI underestimated premorbid IQ, with a complex relationship between time post-injury, severity, and age. Participants with a longer education had higher NART FSIQs, although those with less education gained more IQ points between initial and 6 months assessments suggesting higher initial NART impairment. Regression equations predicted NART FSIQ at 6 (R?=?0.813) and 12 months post-trauma (R?=?0.792–0.845), their effectiveness being confirmed via cross-validation. No significant relationships were noted between NART-estimated FSIQ and mood variables, or evidence of significant gains in estimated FSIQ between 12 and 24 months post-injury. |
| |
Keywords: | Impaired NART TBI recovery Age Education Mood |
|
|