Table 2. Parameters and coefficient of determination for the best fits of Eqs. 3 and 5 to the data of effort-insensitive monkeys.

Monkey	kw	kd	E0	R2
GK	16.8	16.1	6.5	0.98
KL	5.4	4.9	3.3	0.97
ST	11.2	11.6	1.4	0.98
TB	10.7	10.8	7.3	0.79
Average	11.0±4.7	10.8±4.6	4.6±2.7	0.93±0.09

The fits corresponding to these parameters are plotted in Figure 2B. Average reports mean ± SD.