Table 1 Neuropsychological scores and percentiles

	2010			2015
	Score	Percentile	Z-score	Score	Percentile	Z-score
General intelligence
WAIS-IV	128^a	97	1.88
WRAT-IV				123^a	97	1.88
Verbal reasoning
WAIS-IV similarities	13^a	84	1	14^a	91	1.33
Immediate and working memory
BVMT trial total	31	82	0.92	35	97	1.88
CVLT-II trial total				68	97	1.88
WAIS-IV digit span forward				11	50	0
Delayed memory
BVMT delayed recall	11	73	0.061	12	90	1.28
CVLT-II LDFR				16	93	1.48
Language
COWA FAS	57	77	0.074	50	65	0.39
Animals				32	90	1.28
BNT				55	19	-0.88
Motor function
GPB dominant	53	84	1	64.5	34	−0.41 ^b
GPB non-dominant	69	25	−0.67	90.6	2	−2.05 ^b
Executive function
Trail making test - B	24	100	3	46	78	0.77 ^b
Stroop color-word	WNL			57	81	0.88
WAIS-IV digit span backward				11	70	0.66
WAIS-IV letter-number sequencing				20	50	0
Processing speed
WAIS-IV digit symbol/coding	13^a	84	1	11^a	63	0.33
WAIS-IV symbol search	18^a	100	2.66	14^a	91	1.33 ^b

Abbreviations: BNT, Boston Naming Test; BVMT, Brief Visuo-Spatial Memory Test; CVLT-II LDFR, California Verbal Learning Test II Long Delay Free Recall; COWA, Controlled Oral Word Association; GPB, Grooved Pegboard; WAIS-IV, Wechsler Adult Intelligence Scale, 4th edition; WNL, within normal limits; WRAT-IV, Wide Range Acheivement Test 4.
^aScaled score, all other scores reported as raw scores.
^bZ-score change of ⩾1. Scores were not available for all tests for both time points.

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