title: WIDE RANGE ACHIEVEMENT TEST IN AUTISM SPECTRUM DISORDER: TEST-RETEST STABILITY.
abstract: The principal goal of this descriptive study was to establish the test-retest stability of the Reading, Spelling, and Arithmetic subtest scores of the Wide Range Achievement Test (WRAT-3) across two administrations in individuals with autism spectrum disorder. Participants (N = 31) were males ages 6-22 years (M = 15.2, SD = 4.0) who were part of a larger ongoing longitudinal study of brain development in children and adults with autism spectrum disorder (N = 185). Test-retest stability for all three subtests remained consistent across administration periods (M = 31.8 mo., SD = 4.1). Age at time of administration, time between administrations, and test form did not significantly influence test-retest stability. Results indicated that for research involving individuals with autism spectrum disorder with a full scale intelligence quotient above 75, the WRAT-3 Spelling and Arithmetic subtests have acceptable test-retest stability over time and the Reading subtest has moderate test-retest stability over time.
authors: 1 Texas State University.
authors: Paul B
authors: PB
authors: Jantz
authors: 2 Department of Psychology, Brigham Young University.
authors: Erin D
authors: ED
authors: Bigler
authors: 3 Department of Psychology, University of Utah.
authors: Alyson L
authors: AL
authors: Froehlich
authors: 4 Department of Pediatrics, School of Medicine, University of Utah, Waisman Laboratory for Brain Imaging and Behavior, University of Wisconsin-Madison.
authors: Molly B D
authors: MB
authors: Prigge
authors: 5 Department of Psychiatry, School of Medicine, University of Utah.
authors: Annahir N
authors: AN
authors: Cariello
authors: 6 Occupational Therapy Program, Department of Kinesiology, Waisman Laboratory for Brain Imaging and Behavior, University of Wisconsin-Madison.
authors: Brittany G
authors: BG
authors: Travers
authors: 7 Departments of Radiology and Bioengineering, University of Utah.
authors: Jeffrey
authors: J
authors: Anderson
authors: 8 Department of Pediatrics and Neurology, School of Medicine, University of Utah.
authors: Brandon A
authors: BA
authors: Zielinski
authors: 9 Department of Medical Physics, Department of Psychiatry, Waisman Laboratory for Brain Imaging and Behavior, University of Wisconsin-Madison.
authors: Andrew L
authors: AL
authors: Alexander
authors: 10 Departments of Psychiatry and Biostatistics, Harvard University, Neurostatistics Laboratory, McLean Hospital, Belmont, MA.
authors: Nicholas
authors: N
authors: Lange
authors: 11 Department of Psychiatry, Waisman Laboratory for Brain Imaging and Behavior, University of Wisconsin-Madison.
authors: Janet E
authors: JE
authors: Lainhart
mesh_terms: D000124:Achievement; D000293:Adolescent; D000328:Adult; D002648:Child; D002659:Child Development Disorders, Pervasive / Q000175:diagnosis*; D004521:Educational Measurement / Q000592:standards*; D005260:Female; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests / Q000592:standards*; D015203:Reproducibility of Results; D055815:Young Adult