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. Author manuscript; available in PMC: 2009 Jun 8.
Published in final edited form as: Psychol Rev. 2009 Jan;116(1):59–83. doi: 10.1037/a0014086

Table 2.

Confidence and Decision Criteria and Decision Criterion Range for Experiments 1 and 2

Confidence criteria
 Decision criteria
 Decision
criterion
range
Experiment and group Statistic c1 c2 c3 c4 c5 d1 d2 d3 d4 d5 d6
Experiment 1 Fit to mean data −1.01 −0.19 0.44 1.41 2.30 2.44 2.32 2.35 2.77 2.25 2.34 1.13
Means over subjects −1.04 −0.17 0.44 1.32 2.28 2.28 2.20 2.25 2.57 2.16 2.21 1.04
SD over subjects 0.10 0.03 0.05 0.25 0.15 0.17 0.12 0.39 0.13 0.15 0.28 0.23
Monte Carlo recovery simulations Monte Carlo means −1.00 −0.19 0.44 1.39 2.31 2.41 2.25 2.29 2.67 2.20 2.27 1.16
Monte Carlo SDs 0.02 0.01 0.01 0.02 0.03 0.03 0.02 0.03 0.03 0.03 0.04 0.03
Experiment 2, speed Fit to mean data −1.12 −0.16 0.66 1.54 2.70 2.86 1.95 2.24 2.66 2.01 2.65 0.11
Experiment 2, accuracy Fit to mean data −1.12 −0.16 0.66 1.54 2.70 4.32 3.31 3.59 4.14 3.74 3.88 0.11

Note. In Experiment 2, the values of all confidence criteria (c1–c5) and the decision criterion range were constrained to be the same in the speed and accuracy conditions. c1–c5 are the confidence criteria used to derive drift rates from match distributions; d1–d6 are the decision criteria that terminate the accumulation race.