Weve all had our moments of weakness when trying to control ourselves; eating that donut on your diet, losing your temper with your kids, becoming upset when youre doing your best not to. It isnt like we plan on these lapses in judgment. Its more like they just sort of happen.
There is scientific evidence that explains this phenomenon of everyday life. Self regulation, our strength to inhibit impulses, make decisions, persist at difficult tasks, and control emotions can be spent just like a muscle that has been lifting heavy weights. When we spend our strength on one task (trying to control your emotion around a petulant boss), there is less to spend on others (avoiding the Ben & Jerrys when we get home).
The funny thing about being vulnerable to saying, eating, or doing the wrong thing is that humans are typically unaware that they are in a moment of weakness, unlike the strain and fatigue we feel in our muscles after a workout. Fortunately, new research conducted by University of Kentucky psychologists Suzanne Segerstrom and Lise Solberg Nes suggest that there may be a biological indicator to tell us when we are working hard at resisting temptation and consequently when we are vulnerable to doing things contrary to our intentions.
A measure of cardiac regulation called heart rate variability (HRV) appears to be linked to self regulation according to the article published in the March issue of Psychological Science.
The authors conducted a two-part study in order to test their hypothesis. In the first, participants were instructed to fast for three hours in order to take part in what they believed was a physiology of food preference experiment. Participants HRV was monitored while they were presented with a tray of cookies, candy and.carrots. Temptation, in this case, was indicated by giving into the tastier but decidedly less healthy snack of cookies and candy.
HRV as it turns out was considerably higher
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Contact: Suzanne Segerstrom
scsege0@uky.edu
Association for Psychological Science
21-Mar-2007