Table 2. WCST performance and reaction time measures for Anorexia Nervosa (AN) and Healthy Control (HC) groups.

	Anorexia Nervosa (n = 32)		Healthy Control (n = 32)
Performance Score	Median	IQR	Median	IQR	U (df)	Z-Score	p-value
First Correct	11	10.25–11	11	11–11	U(1) = 495	0.26	.796
Second Correct	11	10–11	11	10–11	U(1) = 475.5	0.54	.586
Completed Sets	8	7–9	9.5	8–10	U(1) = 334.5	2.45	.014
Efficient Shift	14	13–15.75	14	13–15	U(1) = 421	1.25	.213
Total Correct	80	75–83	81	79–84	U(1) = 399.5	1.52	.129
SiS-Perseveration	.5	0–2.75	1	0–1.75	U(1) = 508.5	0.05	.960
Rec-Perseveration	0	0–1.75	0	0–1	U(1) = 493.5	0.29	.774
Loss-of-Set	2	1–3	1	1–2.75	U(1) = 430	1.12	.261
Mean Reaction Time (ms)	Mean	S.D.	Mean	S.D.	t (df)		p-value
First Correct	1473.9	252.9	1374.3	234.2	t(62) = 1.64		.107
Second Correct	1355.1	191.1	1328.6	163.8	t(62) = 0.59		.553
Completed Set	1417.3	278.9	1260.4	195.3	t(62) = 2.61		.011
Efficient Shift	1426.8	221.2	1288.7	200.0	t(62) = 2.62		.011
SiS-Perseveration a	1409.9	562.4	1257.4	314.3	t(32) = 0.99		.329
Rec-Perseveration b	1283.4	443.4	1394.4	385.6	t(21) = 0.64		.527
Loss-of-Set c	1531.9	401.7	1212.7	269.3	t(43.85) = 3.35		.002 *

IQR = inter-quartile range; S.D. = standard deviation

(*) indicates results that remain significant after Bonferroni multiple comparison correction

^a Data based on 16AN and 16HC; the remaining participants committed 0 errors

^b Data based on 11AN and 13HC; the remaining participants committed 0 errors

^c Data based on 26AN and 25HC; the remaining participants committed 0 errors