Table 2.

Group performance at the Cambridge Face Memory Test (CFMT) of prosopagnosic (P) and non-prosopagnosic (NP) autistic (AUT) and neurotypical (NT) participants

CFMT (prosopagnosia cut-off = 42)	N	mean number of correct responses (over a total of 72)	SD	Range
NT (NT-NP + NT-P)	80	56.20 95% CI [54.03, 58.37]	9.76 95% CI [8.45, 11.56]	25–72
NT-NP	75	57.45 95% CI [55.48, 59.42]	8.57 95% CI [7.38, 10.21]	43–72
NT-P	5	37.40 95% CI [28.42, 46.38]	7.23 95% CI [4.33, 20.78]	25–42
AUT (AUT-NP + AUT-P)	80	46.85 95% CI [44.36, 49.34]	11.20 95% CI [9.69, 13.26]	18–72
AUT-NP*	51	53.64 95% CI [51.49, 55.79]	7.55 95% CI [6.31, 9.41]	43–72
AUT-P	29	35.52 95% CI [33.28, 37.75]	5.87 95% CI [4.66, 7.94]	18–42

NT neurotypical participants, AUT autistic participants, P prosopagnosic, NP non-prosopagnosic, CFMT Cambridge Face Memory Test, SD standard deviation, CI confidence interval

*AUT-NP mean, SD, and range do not include a participant who scored 36 and was assigned to the AUT-NP group as they did not meet their age-standardized prosopagnosia cut-off