Two Kinds of Overeating: Can We Distinguish Between Disinhibited Eating in Restrained Eaters and Simple Overeating That Occurs in Everyone?

Four studies were conducted to examine whether disinhibited eating among restrained eaters can be differentiated from simple overeating, which occurs among both restrained and unrestrained eaters. We propose that disinhibited eating is caused by the conscious relaxation of inhibitions on food intake. In contrast, simple overeating is an umbrella term encompassing all forms of inadvertent overeating. This includes overeating in response to cues that redefine acceptable intake, and thus allow people to eat more than usual without viewing their food intake as excessive. Disinhibited eating in dieters should result in continued overeating in the absence of factors causing reinhibition, whereas simple overeating does not undermine dietary inhibition and should not result in continued overeating, and may not even be experienced as overeating. Furthermore, unlike simple overeating, disinhibited eating should be accompanied by perceptions that one has eaten too much. Study 1 examines whether restrained eaters who become disinhibited continue to overeat after the disinhibitor is removed. Restrained eaters who were disinhibited by expecting their diets to be broken, and only those restrained eaters, continued to overeat when presented with a second eating opportunity. Studies 2 and 3 assess whether simple overeating in response to normative cues can be distinguished from disinhibited eating in response to cognitive cues related to thinking the diet is or will be broken. In Study 3, restrained eaters who became disinhibited by thinking that their diets would be broken viewed their food intake as excessive and continued to overeat after the disinhibitor was removed. In contrast, restrained eaters who ate a lot after being informed that other study participants had eaten a large amount did not view their food intake as excessive and did not go on to overeat during a second eating opportunity. Study 4 was designed to further examine the role of awareness of having overeaten in disinhibited eating, but no disinhibition effect was observed. Overall, the results suggest that disinhibited eating can be distinguished from simple overeating on the basis of whether restrained eaters view their intake as excessive and whether they continue to overeat during a second eating opportunity.Ph