Table 1. Confusion matrices of expression categorization: percentage of participants selecting the expression labels, averaged across the stimulus set and participants.

Displayed expression		Categorized expression (%)
	Intensity	Happy	Sad	Anger	Surprise	Disgust	Fear
Happy	20%	62.50	15.18	8.04	6.25	3.57	4.46
	40%	95.54	0.89	0.89	0.89	0.00	1.79
	60%	99.11	0.00	0.00	0.00	0.00	0.89
	80%	99.11	0.89	0.00	0.00	0.00	0.00
	100%	99.11	0.00	0.00	0.89	0.00	0.00
Sad	20%	8.04	67.86	7.14	5.36	6.25	5.36
	40%	3.57	81.25	4.46	1.79	6.25	2.68
	60%	0.00	86.61	1.79	0.00	6.25	5.36
	80%	0.00	92.86	0.89	0.89	1.79	3.54
	100%	0.00	95.54	0.00	0.89	0.89	2.68
Anger	20%	9.82	38.39	26.79	8.93	10.71	5.36
	40%	1.79	12.50	75.00	3.57	5.36	1.79
	60%	0.00	2.68	88.39	1.79	4.46	2.68
	80%	0.00	2.68	91.96	1.79	2.68	0.89
	100%	0.00	1.79	94.64	1.79	0.89	0.89
Surprise	20%	24.11	42.86	8.93	5.36	9.82	8.93
	40%	8.04	15.18	0.89	64.29	1.79	9.82
	60%	4.46	1.79	0.00	89.29	0.89	3.57
	80%	0.89	0.00	0.00	93.75	0.89	4.46
	100%	1.79	0.89	0.00	92.86	0.00	4.46
Disgust	20%	10.71	28.57	15.18	5.36	34.82	5.36
	40%	4.46	16.07	14.29	1.79	59.82	3.57
	60%	0.00	11.61	12.50	0.89	72.32	2.68
	80%	2.68	8.04	13.39	0.00	75.00	0.89
	100%	0.00	6.25	10.71	0.00	82.14	0.89
Fear	20%	18.75	39.29	10.71	9.82	8.93	12.50
	40%	4.46	8.04	2.68	22.32	8.93	53.57
	60%	0.89	2.68	3.57	23.21	8.04	61.61
	80%	0.89	1.79	2.68	17.86	8.93	67.86
	100%	0.00	1.79	1.79	16.07	8.93	71.73