Table 1.

Descriptive statistics for all cognitive measures

Cognitive measure	M	SD	Range
General reasoning
PPVT	100.41	11.32	82–130
WASI Matrix	43.93	8.99	20–59
STM and WM
Digit Recall	95.90	10.24	74–126
Dot Matrix	97.46	16.94	70–138
Backward Digit Recall	98.75	12.08	73–126
Mr X	94.25	17.10	67–132
Tetris Game Play
Total scorea	65.32	28.72	20.59–139.18

Note: PPVT = Peabody Picture Vocabulary Test; WAIS = Wechsler Adult Intelligence Scale; STM = short‐term memory; WM = working memory;

^aScores were square root transformed.