Files section contains the E Prime file from the original study. Note that Dr. Besner described, in email, further instruction on calculating the low contingency adjusted condition:
*"One detail that might be worth specifically explaining is the low contingency adjusted condition. This was described as:
low contingency adjusted = (low contingency) x (percentage unpredicted errors) x (3/2)
To explain this clearly:
low contingency = percentage of errors for low contingency trials (31.4% in paper)
percentage unpredicted errors = (total errors for low contingency trials, excluding the high contingency response) / (total errors for low contingency trials, including the high contingency response) (63.6% in paper)
3/2 = correction for the fact that one is only looking at two of the three possible incorrect responses
Thus, 31.4 x 63.6 x 3/2 = 30.0%
But more specifically, this formula was calculated for every participant using their own data (i.e., not the group averaged means)."*
And that he created a variable to assist in this calculation:
*"I note now that I made a variable called "Predicted" that corresponds to the high contingency response, which can be used for calculating the low contingency adjusted condition. For each low contingency trial error, "if Predicted = ISPCdisplay.RESP" tells you whether it is a predicted versus unpredicted error."*