Monitor yourself! Deficient error-related brain activity predicts real-life self-control failures

Despite their immense relevance, the neurocognitive mechanisms underlying real-life self-control failures (SCFs) are insufficiently understood. Whereas previous studies have shown that SCFs were associated with decreased activity in the right inferior frontal gyrus (rIFG; a region involved in cognitive control), here we consider the possibility that the reduced implementation of cognitive control in individuals with low self-control may be due to impaired performance monitoring. Following a brain-as-predictor approach, we combined experience sampling of daily SCFs with functional magnetic resonance imaging (fMRI) in a Stroop task. In our sample of 118 participants, proneness to SCF was reliably predicted by low error-related activation of a performance-monitoring network (comprising anterior mid-cingulate cortex, presupplementary motor area, and anterior insula), low posterror rIFG activation, and reduced posterror slowing. Remarkably, these neural and behavioral measures predicted variability in SCFs beyond what was predicted by self-reported trait self-control. These results suggest that real-life SCFs may result from deficient performance monitoring, leading to reduced recruitment of cognitive control after responses that conflict with superordinate goals.     

When misconduct goes unnoticed: The acceptability of gradual erosion in others’ unethical behavior

Four laboratory studies show that people are more likely to accept others’ unethical behavior when ethical degradation occurs slowly rather than in one abrupt shift. Participants served in the role of watchdogs charged with catching instances of cheating. The watchdogs in our studies were less likely to criticize the actions of others when their behavior eroded gradually, over time, rather than in one abrupt shift. We refer to this phenomenon as the slippery-slope effect. Our studies also demonstrate that at least part of this effect can be attributed to implicit biases that result in a failure to notice ethical erosion when it occurs slowly. Broadly, our studies provide evidence as to when and why people accept cheating by others and examine the conditions under which the slippery-slope effect occurs.     

An Experimental Study of the Motor Theory of Consciousness: II. Method and Apparatus

Rapoport, A. Science and the Goals of Man. New York: Harper, 1950. Pp. 262. Reviewed by Gwynne Nettler