Dr. Amodio, the corresponding author of the report I mentioned Thursday, “Neurocognitive correlates of liberalism and conservatism,” was kind enough to send me the article and the supporting material. The picture above is the figure that accompanies the 2 page report.
I believe that the paper may demonstrate some evidence concerning the part of the brain which deals with reacting to visual stimuli by making a choice between the correct and incorrect choices. The experiment involved a questionnaire, self description as to “Liberal” vs. “Conservative” along a gradient of “very liberal” to neutral to very conservative, and then participating in a “Go/No Go” experiment while a latex cap placed on the head measured the participant’s brain wave paterns or EEG.
The 43 participants were college students and 63% of them were female. The figure 1a indicates that 7 of them identified as conservative, although none called themselves “very conservative.”
There is no mention of correlation of any of the other variables (age, gender, visual acuity) involved in hand to eye coordination.
I’m afraid that, as I feared, the problem with the experimental method is that these participants predominantly identified as liberal and that there is some sort of blind spot at work at Nature Neuroscience.