Table 1.

Equation 1 (Exponential) vs. Equation 2 (Hyperbolic) Model vs. Equation 3 (Hyperboloid) Fits of Group Median Indifference Points

			Median R2
		AIC	Exponential	Mazur (1987)
Date
	Date	5.99	0.81	0.93
	Calendar	6.57	0.91	0.97
Days
	Days	4.14	0.85	0.92
	Calendar	7.03	0.86	0.95
			Mazur (1987)	Myerson and Green (1995)
Date
	Date	7.74	0.93	0.99
	Calendar	9.43	0.97	0.99
Days
	Days	2.03	0.92	0.98
	Calendar	17.66	0.95	0.99

Note. Comparison of Equation 1 (exponential), Equation 2 (hyperbolic) and Equation 3 (hyperboloid) model fits of group median indifference points. AIC favors Equation 3, as do the median R² values.