Table 1.

Correlations of demand curve parameters with cycling daily intake and operant performance

Measure	Essential value (EV)	Demand intensity (Qo)	Elasticity (log α)
Access day daily intake (kcal)	0.79	0.79	−0.82
Non-access day daily intake	−0.82	−0.72	0.85
Weekend day kcal intake	−0.84	−0.71	0.84
Cycling amplitude of intake	0.83	0.78	−0.86
Cycling amplitude of body weight	0.71	0.72	−0.76
FR1 reinforcers	0.90	0.88	−0.84
Timeout responses per pellet	0.63	0.60	−0.65
PR breakpoint	0.71	0.74	−0.73

Note: Pearson correlations (r) are shown; n = 24, all ps<0.002