Objective: Word reading is used to estimate premorbid intellectual abilities, which assumes consistency over time. Cognition may decline among those with chronic severe brain injury, which could affect the reliability of word reading. This study examines test-retest reliability of the Wide Range Achievement Test-4 Word Reading (WRAT-4) in a sample of adults with chronic severe acquired brain injuries (ABI). Method: Participants were 58 adults with chronic severe ABI (71% male, M age = 49.05 [10.84], M years post injury = 23.49 [9.99]) who attend a community-based rehabilitation program. Measures of cognition (Neuropsychological Assessment Battery-Screening, Dementia Rating Scale-2), mood (Patient Health Questionnaire, Brief Mood Survey) and word reading (WRAT-4 Word Reading) were selected from serial neuropsychological screenings. SPSS calculations of intraclass correlation coefficients (ICC'S) were analyzed. Results: The ICC score between WRAT-4 baseline and testing 1–2 years later was 0.896, 95% CI (0.830, 0.937), and it was 0.882, 95% CI (0.801,...

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