Table 1.

Control norms (N = 40) for overall performance on each test

	Maximum score	Chance	Control mean (SD)		Cut-off value
			Proportion correct	Raw score	Proportion correct	Raw scorea
CFMT+	102	.33	.68 (.10)	69.53 (10.02)	.87	90
MMT	90	.25	.54 (.14)	48.43 (12.44)	.81	73
PMT	48	.50	.69 (.07)	33.03 (3.49)	.83	40
Crowds test	32	.50	.63 (.12)	20.13 (3.76)	.86	28

CFMT+ long form of the Cambridge Face Memory Test, MMT models memory test, PMT pairs matching test, SD standard deviation

^aRaw score cut-off values rounded up to the next whole number that is 1.96 SDs from the control mean. This score is taken as the cut-off value to determine superior performance. Note that cut-off values were calculated prior to rounding