Table 2.

Means (M), Standard Deviations (s.d.) and group comparisons (F Test and effect size Eta²) for outcome parameters of Experiment 1

	Women with AN (n = 23)		Controls (n = 24)		sig	η 2
	M	s.d.	M	s.d.
Distortion 1AFC	−7.38	4.71	−3.80	5.02	*	0.12
Distortion MoA	−5.94	5.81	−3.19	4.89	†	0.06
Sensitivity to weight loss a	1.14	0.86	1.54	0.79	n.s.	0.06
Sensitivity to weight gain a	1.76	0.46	1.77	0.64	n.s.	0.00
Desired change (MoA)	+2.85	8.28	−6.05	4.33	***	0.32
Desired-v.-actual discrepancy	−2.11	8.12	−9.08	6.13	**	0.20

†p < 0.10, *p < 0.05, **p < 0.01, ***p < 0.001. Only ** and *** would survive correction for multiple testing. All parameters except for Desired change and Desired-v.-actual discrepancy in the AN group were significantly different from zero with p < 0.001 (one-sample t test). Distortion: discrepancy between estimated current and actual body in percent of actual weight, Sensitivity to weight loss: ln-transformed beta values of Weibull fitted 1AFC data left from peak, Sensitivity to weight gain: ln-transformed beta values of Weibull fitted 1AFC data right from peak. Lower beta values reflect lower sensitivity, i.e. a greater tendency to accept the weight manipulated avatars as equal to the actual weight. Desired change: Difference between desired and estimated weight in percent of actual weight. Desired-v.-actual discrepancy: Discrepancy between desired body and actual body in percent weight.

^aSample size n = 21 AN/n = 23 Controls.