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. 2010 Mar;93(2):171–184. doi: 10.1901/jeab.2010.93-171

Table 2.

Parameter estimate (k) and proportion of variance accounted for (R 2) by Equation 1 for fits to individual and group mean data for different reinforcer amounts and pellet types in Experiment 1.

graphic file with name jeab-93-02-03-t02.jpg

10 pellets 30 pellets
Precision Sucrose Cellulose Precision Sucrose Cellulose
Subject k R2 k R2 k R2 k R2 k R2 k R2
R71 0.21 .67 0.13 .96 0.12 .83 0.14 .84 — — 0.35 .66
R72 0.05 .58 — — 0.06 .88 0.09 .82 0.11 .91 0.12 .70
R73 0.03 .67 — — 0.11 .94 0.06 .86 0.08 .50 0.13 .49
R74 0.35 .77 — — 0.20 .94 0.54 .61 0.61 .98 0.56 .93
R75 0.31 .82 0.27 .80 0.32 .86 0.17 .95 0.11 .94 0.13 .88
Group 0.13 .81 0.19 .95 0.14 .94 0.14 .96 0.15 .94 0.20 .97