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. 2005 Sep;84(2):129–145. doi: 10.1901/jeab.2005.108-04

Table 3. Least square fits of the modern version of Herrnstein's theory to the response rates for each participant. Equations 5, 6a′, 6b′ and 7′ were fitted simultaneously to the Schedule A and Schedule B data and all magnitudes for each participant. Shown are the values of each parameter—see the text for more details. The dashes indicate that the parameters listed in this row were held constant across magnitudes. The percentages of variance accounted for (%VAC) by each equation are provided in the right columns.

Participant Magnitude on Schedule A k a1e a12 a2e c1e c2e b12 %VAC
Equation 5 Equation 6a′ Equation 6b′ Equation 7′
H59 – 48.15 0.94 0.72 0.52 2.65
$0.20 10.13 1.17 100 100 99 100
$0.12 11.42 1.13 97 99 99 99
$0.07 13.14 0.99 98 99 99 99
$0.004 16.60 0.78 100 98 99 99
$0.0025 20.56 0.64 99 99 98 99
H60 – 59.52 0.68 0.61 0.56 1.13
$0.20 1.14 1.46 99 99 99 99
$0.12 1.48 1.14 100 100 99 100
$0.07 1.74 1.05 99 100 99 99
$0.004 3.35 0.50 100 100 100 99
$0.0025 3.61 0.47 99 99 99 99
H64 – 74.99 0.88 0.82 0.75 33.34
$0.20 35.17 1.44 98 98 98 98
$0.12 47.49 1.50 99 98 99 97
$0.07 52.74 0.95 96 100 98 96
$0.004 61.34 0.68 98 97 92 97
$0.0025 74.20 0.69 98 99 97 98
H67 – 72.63 0.40 0.47 0.53 0.49
$0.20 0.24 1.29 98 98 98 98
$0.12 0.24 1.26 95 97 94 94
$0.07 0.28 1.08 99 99 99 99
$0.004 0.38 0.77 96 96 97 97
$0.0025 0.46 0.63 91 94 93 92
H69 – 134.31 0.34 0.28 0.22 20.78
$0.20 29.85 0.95 96 91 80 95
$0.12 29.18 1.07 97 94 98 97
$0.07 35.87 0.89 92 98 40 92
$0.004 40.32 0.74 97 99 85 96
$0.0025 34.48 0.96 98 89 69 97
H70 – 104.48 0.48 0.39 0.32 1.28
$0.20 1.30 1.62 91 96 96 92
$0.12 1.67 1.40 98 99 98 98
$0.07 2.07 1.16 98 97 99 98
$0.004 4.61 0.46 93 94 86 94
$0.0025 5.02 0.48 93 93 87 94
Median – 73.81 0.58 0.54 0.52 1.97
$0.20 5.71 1.37 98 98 98 98
$0.12 6.55 1.20 98 99 99 98
$0.07 7.61 1.02 98 99 99 98
$0.004 10.61 0.71 97 98 94 97
$0.0025 12.79 0.64 98 96 95 98