Table 1.

Mean (SD) for each timepoint for the matching and ratings tasks

Measure	Unedited faces			Mask only			Sunglasses only			Mask and sunglasses
	Jun 2020	Feb 2021	Aug 2021	Jun 2020	Feb 2021	Aug 2021	Jun 2020	Feb 2021	Aug 2021	Jun 2020	Feb 2021	Aug 2021
SDT measures
A (sensitivity)	0.97 (0.04)	0.96 (0.04)	0.97 (0.04)	0.94 (0.05)	0.93 (0.06)	0.95 (0.05)	0.94 (0.06)	0.94 (0.06)	0.94 (0.06)	0.91 (0.07)	0.89 (0.08)	0.90 (0.07)
B (bias)	0.87 (0.24)	0.84 (0.24)	0.85 (0.22)	1.18 (0.52)	1.18 (0.58)	1.27 (0.55)	1.10 (0.48)	1.10 (0.46)	1.11 (0.45)	1.49 (0.71)	1.40 (0.76)	1.58 (0.77)
Accuracy
Matched identity trials	0.98 (0.03)	0.98 (0.04)	0.98 (0.04)	0.89 (0.11)	0.88 (0.11)	0.88 (0.12)	0.90 (0.11)	0.89 (0.10)	0.90 (0.12)	0.79 (0.15)	0.77 (0.18)	0.76 (0.17)
Mismatched identity trials	0.90 (0.14)	0.89 (0.14)	0.91 (0.15)	0.92 (0.11)	0.88 (0.15)	0.93 (0.11)	0.90 (0.15)	0.89 (0.15)	0.91 (0.12)	0.90 (0.14)	0.88 (0.12)	0.90 (0.14)
Response time (correct responses)
Matched identity trials	2530 (2374)	1865 (676)	1914 (976)	2896 (2993)	2445 (1064)	2766 (2006)	2988 (2280)	2548 (1482)	2657 (1380)	3380 (2967)	3316 (2191)	3298 (2141)
Mismatched identity trials	2690 (2620)	2544 (2463)	2405 (1227)	2517 (1432)	2495 (1169)	2414 (1613)	2679 (1536)	2764 (1701)	2598 (1316)	2711 (1757)	2766 (1340)	2908 (2201)
Mean ratings
Trustworthiness	4.10 (0.86)	4.40 (0.85)	4.22 (0.68)	4.28 (0.68)	4.55 (0.75)	4.14 (0.90)	3.32 (1.06)	3.35 (0.85)	3.49 (0.84)	3.04 (1.02)	3.38 (1.21)	3.26 (0.99)
Competence	4.22 (1.04)	4.39 (0.83)	4.36 (0.71)	4.57 (0.66)	4.72 (0.91)	4.44 (0.86)	3.55 (1.06)	3.81 (1.00)	3.74 (0.91)	3.56 (1.16)	3.77 (1.12)	3.77 (0.90)
Attractiveness	3.57 (0.88)	3.70 (0.91)	3.14 (0.92)	3.65 (0.80)	3.81 (0.72)	3.41 (0.89)	3.18 (0.94)	3.35 (0.79)	3.01 (0.93)	2.94 (1.01)	3.16 (0.92)	2.97 (0.96)