Table 1.

Model comparison. Model 1 = two-parameter model; Model 2 = three-parameter model.

	Ponzo	Ebbinghaus	Height–width
GOF, Model 1	0.83	0.88	0.9
GOF, Model 2	0.85	0.88	0.92
Log-likelihood, Model 1	13.232 (df = 3)	17.037 (df = 3)	24.923 (df = 3)
Log-likelihood, Model 2	13.242 (df = 4)	17.037 (df = 4)	24.923 (df = 4)
BIC, Model 1	−19.01	−26.619	−42.391
BIC, Model 2	−16.545	−24.134	−39.91

The bold values indicate the preferred model.