Anyway, I figured it out by comparing the means of the columns to the tables in the paper[1]. I was wondering about the claim that "the magnitude of an individu

Anyway, I figured it out by comparing the means of the columns to the tables in the paper[1]. I was wondering about the claim that "the magnitude of an individual’s Pe correlates positively with omission errors", since they do not show this plot. You can see it by plotting "pe.diff.meanpz.cpz" vs "percent.omission.errors" from the data.sav file at the OSF link (I used the R "memisc" package). There is a correlation, but just slightly (eg the subjects with the highest error had middling Pe). Also, the error rates correspond to the control group not clicking (on average) when they saw an F instead of an E 1-2 times out of 60 vs 3-4 times for the acetaminophen group. They say "the effect of acetaminophen on errors of omission, while robust, was unanticipated". So this was the result of exploratory analysis. Personally I wouldn't put much stock into the idea that acetaminophen "hinders the brains error correction mechanism" based on these results. [1] http://www.ncbi.nlm.nih.gov/pubmed/26892161 http://www.ncbi.nlm.nih.gov/pubmed/26892161