Appendix 1. Neuropsychological tests administered across the 7 North American Institutions*

Intellectual Functioning/Processing Speed/Working Memory: 17 out of 24 children were administered Wechsler tests

·  Wechsler Intelligence Scale for Children, Fourth Edition [WISC-IV; Wechsler, 2003]; N=7

·  Wechsler Preschool and Primary Scale of Intelligence, Fourth Edition [WPPSI-IV; Wechsler, 2012]; N=3

·  Wechsler Preschool and Primary Scale of Intelligence, Third Edition [WPPSI-III; Wechsler, 2004]; N=7

·  Differential Abilities Scale, Second Edition (DAS-II; Elliott, 2007); N=3

·  Bayley Scales of Infant and Toddler Development, Second Edition (Bayley-II; Bayley, 1993); N=1

·  Leiter International Performance Scale, Revised (Leiter-R; Roid & Miller, 1997); N=1

·  Reynolds Intellectual Assessment Scale (RIAS; Reynolds & Kamphus, 2003); N=1

·  Universal Nonverbal Intelligence Test (UNIT; Bracken & McCallum, 1998); N=1

·  Woodcock-Johnson, Third Edition, Tests of Cognitive Abilities (WJ-III; ); N=1

Language Skills: For the purposes of this chart review, overall language abilities were determined using a combination of receptive and expressive language test scores. In a single case there was an inconsistency in expressive and receptive language ability, therefore, the lowest score was taken to represent overall ability.

·  Peabody Picture Vocabulary Test, Third Edition (PPVT-3; Dunn & Dunn, 1997); N=3

·  Expressive Vocabulary Test, Second Edition (EVT-2; Williams, 2007); N=2

·  Expressive One-Word Picture Vocabulary Test (EOWPVT; Gardner, 1985); N=8

·  Receptive One-Word Picture Vocabulary Test (ROWPVT; Gardner, 1985); N=6

·  NEPSY, Second Edition: Comprehension of Instructions, Speeded Naming, Word Generation (NEPSY-II; Korkman, Kirk & Kemp, 2007); N=7

Visual-Spatial Skills

·  Beery-Buktenica Developmental Test of Visual-Motor Integration, Sixth Edition (VMI; Beery, Buktenica, Beery, 2010); N=10

·  NEPSY, Second Edition: Geometric Puzzles (NEPSY-II; Korkman, Kirk & Kemp, 2007); N=2

Memory

·  California Verbal Learning Test- Children’s Version (CVLT-C; Delis, Kramer, et al. , 1994); N=8

·  Children’s Memory Scale (CMS; Cohen, 1997); N=10

·  NEPSY: Memory for Names, Narrative Memory (Korkman & Kemp, 1998); N=3

·  NEPSY, Second Edition: Memory for Designs, Memory for Names, Narrative Memory, Sentence Repetition (NEPSY-II; Korkman, Kirk & Kemp, 2007); N=5

·  Wide Range Assessment of Memory and Learning, Second Edition: Story Memory, Design Memory, Picture Memory, Verbal Learning (WRAML2; Sheslow & Adams, 2003); N=4

Fine Motor Skills

·  Purdue Pegboard (Tiffin, 1968); N=2

·  Grooved Pegboard (Matthews & Klove, 1964); N=7

·  Wide Range Assessment of Visual Motor Abilities (WRAVMA; Adams & Sheslow, 1995); N=3

Academics

·  Wechsler Individual Achievement Test-Third Edition (WIAT-III; Wechsler, 2009); N=7

·  Woodcock-Johnson-III Tests of Achievement(WJ-III ACH; Woodcock, McGrew & Mather, 2001); N=7

·  Woodcock-Munoz Language Survey (WMLS; Woodcock et al., 2005); N=2

·  Wide Range Achievement Test - Fourth Edition (WRAT- 4; Wilkinson & Robertson, 2006); N=2

Attention

·  Revised Conners' Parent Rating Scale (CPRS-R); N=5

·  ADHD Rating Scale-IV (ADHD-IV; DuPaul et al., 1998); N=3

·  Conners Continuous Performance Test, Second Edition (CPT-II; Conners, 1999); N=5

·  NEPSY, Second Edition: Auditory Attention (NEPSY-II; Korkman, Kirk & Kemp, 2007); N=2

Executive Functioning

·  Delis Kaplan Executive Function System (D-KEFS; Delis, Kaplan, & Kramer, 2001); N=3

·  Behavior Rating Inventory of Executive Function (BRIEF; Gioia et al., 2000); N=8

·  NEPSY, Second Edition: Inhibition, Statue (NEPSY-II; Korkman, Kirk & Kemp, 2007); N=2

Adaptive Functioning

·  Adaptive Behavior Assessment System, Second Edition (ABAS-II; Harrison & Oakland, 2003); N=8

·  Scales of Independent Behavior-Revised (SIB-R; Bruininks et al., 1996); N=2

Behavioral Functioning

·  Behavior Assessment System for Children, Second Edition (BASC-2; Reynolds & Kamphaus, 2008); N=7

·  Child Behavior Checklist (CBCL; Achenbach & Rescorla, 2000); N=6

*Some neuropsychological reports did not report the specific tests used in each neurocognitive domain and instead described results in terms of qualitative descriptors (i.e., low average, age-appropriate, extremely low) within each domain.