Goal priming and eating behavior: Enhancing self-regulation by environmental cues.

Objective: Several lines of research have shown that the confrontation with attractive food can trigger overeating, especially in restrained eaters. This effect may be driven by a hedonic orientation toward food which temporarily overrules the goal of dieting in the regulation of behavior. The present study was designed to provide an experimental demonstration of this effect in a naturalistic setting, and to show that reactivating the goal of dieting by a subtle prime in the environment can help restrained eaters to regulate their eating behavior in tempting situations. Design: In a local store where the smell of grilled chicken was present, we observed the number of free meat snacks customers sampled from a tray after they had been primed with the dieting goal or not. Main Outcome Measures: Number of snacks consumed. Results: Consistent with hypotheses, restrained eaters ate more than unrestrained eaters in the control condition. However, they reduced their eating behavior when primed with dieting, whereas this manipulation did not affect unrestrained eaters. Conclusion: This study shows that unobtrusively priming the goal of dieting can enhance self-regulation in tempting eating situations. These results are discussed in the context of recent advances in our understanding of nonconscious behavior regulation and their applications to health behavior. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of anxiety on eating: Does palatability moderate distress-induced overeating in dieters?

When confronted with an anxiety-producing threat to self-esteem, restrained eaters (dieters) increase their food consumption. The functional explanation suggests that increased eating temporarily counteracts or masks dysphoria for the restrained eater; externality or stimulus sensitivity theories propose that distress shifts the dieter's attention to external stimulus properties (e.g., taste) and to activities stimulated by such external cues. In an attempt to distinguish between these two explanations, anxious and nonanxious restrained and unrestrained eaters were given palatable and unpalatable foods, and consumption was measured. Results support the functional explanations: Distressed dieters increased their intake of food regardless of taste properties. Theoretical and practical implications for both restrained eating and the behavior of eating disorder patients are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

On the relation of dieting and bingeing in bulimia nervosa.

The continuum model of bulimia nervosa suggests that dieting plays a major role in the etiology and maintenance of bulimia. However, a previous study (M. R. Lowe et al., 1996) recently found no relationship between dieting intensity and binge eating problems in nonclinical participants differing widely in eating and weight concerns. The present study extended these findings by examining the relationship between dieting and bingeing among individuals with bulimia. Three samples of individuals diagnosed with bulimia were divided into frequent and infrequent weight-loss dieters and were compared on multiple measures of binge eating. No diet-binge relationship was found in 1 sample, whereas in the other 2 samples frequent dieters binged less than infrequent dieters. These results raise new questions about the continuum model of bulimia and suggest that weight-loss dieting may not play as prominent a role in the maintenance of bulimia as it does in its initiation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Dietary restraint: A theoretical and empirical review.

Examines 2 basic hypotheses concerning dietary restraint. One hypothesis focuses on disinhibition or loss of control among dieters, and the other focuses on the relations between obesity and restraint. It is concluded that the disinhibition hypothesis, which proposes that dieters overeat after disruptions in self-control, has been supported. Both perceptions of having overeaten and dysphoric mood precipitate high consumption among restrained eaters. Research is needed to establish the processes underlying these effects. It is also concluded that the obesity and restraint hypothesis, which proposes that differences in level of restraint underlie differences between obese and normal weight people's eating patterns, has not been supported. Although obese people have higher average restraint scores than normal weight people do, they do not show the disinhibited eating patterns that characterize normal weight, restrained eaters. Studies of the restraint scale have indicated that the high scores found among obese people may be due to psychometric problems in the scale. Overall, it is concluded that although the hypotheses concerning restraint and the recent extension of them into a boundary model of food regulation do not seem useful in understanding obesity, they appear to be relevant to understanding binge eating and related disorders such as bulimia. (77 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Frontal brain asymmetry in restrained eaters.

It is well known that the eating patterns that restrain chronic dieters (restrained eaters) can be disinhibited by anxiety, which in turn has been associated with relative right frontal brain activity in independent electroencephalographic (EEG) studies. Combining these two lines of evidence, the authors tested the hypothesis that chronic restrained eating is associated with relative right frontal asymmetry. Resting anterior brain asymmetry and self-reported measures of anxiety and depression were collected in 23 restrained and 32 unrestrained eaters. As hypothesized, groups differed in tonic frontal activity, with restrained eaters showing more relative right frontal activity. Furthermore, relative right frontal activity was associated with greater self-reported restraint. Right-sided prefrontal asymmetry may thus represent a diathesis associated with increased vulnerability toward restrained eating. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Restraint, dieting, and the continuum model of bulimia nervosa.

The authors evaluated the continuity model of bulimia nervosa, which suggests that bulimia results from extreme weight concern and dieting practices. Individuals with bulimia, current dieters, restrained nondieters, and unrestrained nondieters were compared on measures of general psychopathology, eating-disorder-specific psychopathology, and overeating. Multiple methods, including questionnaires, clinical interviews, and food records, were used to collect data. The continuity and discontinuity models were tested with trend and regression analyses. The results of most analyses were consistent with the continuity perspective. However, binge eating behavior exhibited a clear nonlinear trend, which occurred because binge eating was common in bulimic individuals but virtually nonexistent in the other 3 groups. Current dieters scored higher than restrained nondieters on restraint/weight concern, but not on psyhopathology or binge eating. Overall, the results suggest that "normal" dieting is associated with psychological, but not consummatory, symptoms of bulimia. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Restrained eating among adolescents: Dieters are not always bingers and bingers are not always dieters.

This study examined individual differences in the relationships among 3 constructs relevant to restrained eating theory—cognitive restraint (dieting), disinhibition (bingeing), and hunger. Participants were 421 adolescents (158 male, 255 female, and 8 not indicated). Comparisons among subgroups based on scores on the 3 constructs indicated that there were (a) 2 types of frequent dieters—those who follow theoretical predictions and become disinhibited and those who maintain their restraint; (b) 2 types of bingers—those who engage in dieting-induced bingeing and those who are hungry and disinhibited; and (c) 2 types of low-hunger eaters—those who suppress their hunger and those who eat before they experience much hunger. Implications of the results for restrained eating theory are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Dieting and binging: A causal analysis.

Discusses the association between binge eating and dieting and presents sequence data indicating that dieting usually precedes binge eating chronologically. The present authors propose that dieting causes binging by promoting the adoption of a cognitively regulated eating style, which is necessary if the physiological defense of body weight is to be overcome. The defense of body weight entails various metabolic adjustments that assist energy conservation, but the behavioral reaction of binge eating is best understood in cognitive, not physiological, terms. By supplanting physiological regulatory controls with cognitive controls, dieting makes the dieter vulnerable to disinhibition and consequent overeating. Implications for therapy and the societal consequences of regarding dieting as a solution to the problem of binging are discussed. (59 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The effects of dieting on eating behavior: A three-factor model.

Reviews and critiques restraint theory and develops a 3-factor model of dieting behavior. The factors (frequency of dieting and overeating, current dieting, and weight suppression) are embedded within a 3-dimensional grid that also considers mechanisms mediating the effects of dieting and the influence of weight status. The eating behavior exhibited by restrained eaters stems from their frequent dieting and overeating in the past rather than from their current state of dietary or cognitive restraint. Evidence is reviewed indicating that current dieting and weight suppression have different effects on eating than does restraint. The 3-factor model is used to reinterpret findings consistent with restraint theory and to explain findings inconsistent with restraint theory. Finally, clinical and research implications of the 3-factor model are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Obesity, dieting, and the expression of obese characteristics.

86 obese, normal, and underweight college-age males were divided into subgroups of dieters and nondieters. Consumption following a preload was found to vary as a function of dieting, not obesity, with dieters exhibiting the "obese" response (absence of caloric compensation) irrespective of weight classification. Similarly, elevated levels of free fatty acids, normally found in the obese, were associated with dieting rather than obesity per se. Implications of these findings for current theories of obesity are discussed. (25 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Hope: future imagined reality. The meaning of hope as described by a group of healthy Pentecostalists

BACKGROUND: The current study investigated the fundamental nature of the cognitive processing deficit that has been demonstrated to be associated with dieting to lose weight. Previous work has characterized this deficit as being primarily one of a reduction in working-memory capacity. The present study investigated the particular components of the working-memory system affected during dieting. METHOD: A sample of female subjects was classified as either low/medium restrained eaters (N = 34), highly restrained eaters (N = 18) or current dieters (N = 19), based on their responses to a modified version of the Dutch Eating Behaviour Questionnaire (DEBQ). Each subject completed tasks that assessed the Visuo-Spatial Sketchpad (mental rotation), Phonological Loop (effect of phonological similarity on recall) and the Central Executive (Tower of London Task) components of working memory. RESULTS: Those subjects who reported themselves to be currently dieting displayed poorer recall on the Phonological Loop task and slower planning times on the Tower of London Task. Performance on both these tasks correlated significantly with a self-report measure of body shape concern. CONCLUSIONS: These results support the hypothesis that the mediating variable in this deficit is that of preoccupying cognitions concerning food and body shape.     

Tetralogy of Fallot with flap valve ventricular septal defect producing suprasystemic right ventricular pressure: echocardiographic observations

The study objectives were to gain insight into how the terms "dieting" and "binge eating" are understood and used by adolescents and to assess whether interpretations of these terms are consistent across age and gender. Twenty-five focus groups were conducted with 203 adolescents (138 girls and 65 boys) in urban public junior and senior high schools. Respondents were asked questions about dieting and binge eating behaviors. In the majority of groups (n=19), healthful eating behaviors, such as eating less fat or more fruits and vegetables, were mentioned in reference to dieting. However, in many of the groups (n=13) unhealthful eating behaviors, such as skipping meals or "starvation," were also described. Dieting was frequently described as an umbrella term for different behaviors aimed at weight control (ie, physical activity) or in nonbehavioral terms (ie, as a desire or plan for weight loss). Although binge eating was described as overeating by many participants, often it was not clear if youth were referring to uncontrolled overeating. In nearly half of the groups, participants indicated unfamiliarity with the term "binge eating." There was some confusion between binge eating and other forms of disordered eating. The findings suggest that prevalence rates of self-reported dieting and binge eating behaviors should be interpreted with caution and it should not be assumed that the majority of adolescents who self-report dieting are engaging in unhealthful behaviors. In providing nutrition counseling to youth, and in assessing dieting and binge eating behaviors in clinical settings and in research studies, specific behaviors should be defined.     

The measurement of restraint: confounding success and failure?

The present study examined the concept of restrained eating as measured by the Restraint Scale and the restrained eating section of the Dutch Eating Behaviour Questionnaire. The results showed that when answering questionnaires, subjects do not differentiate between items relating to attempts at dieting and actual restrictive behavior and that restrained eating can be conceptualized in terms of both successful and failed restraint. In addition, the results suggest that subjects who report high scores on both these measures of restraint represent a population of dieters prone to overeating behavior. The results are discussed in terms of the population selected by measures of restrained eating and in relation to the definition of restraint.     

Psychological characteristics of dieters and bulimics.

Two studies examined the continuum and discontinuity models of the relation between dieting and bulimia nervosa. In Study 1, 21 dieters, 19 bulimics, and 33 nondieting controls were compared on 24 measures. Multivariate analyses revealed that each of the groups differed significantly from the other 2. Univariate analyses found 18 significant differences between bulimics and dieters and 1 significant difference between dieters and controls. In Study 2, 86 Ss completed measures of psychological functioning, dieting, and bulimia nervosa. On the basis of regression analyses using factor scores from the psychological variables as predictors, high scores on a psychopathology factor and low scores on a defensiveness factor predicted both bulimia and dieting. Low self-concept scores also predicted bulimia. These data indicate that both continuity and discontinuity characterize the relation between dieting and bulimia. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Predicting distress-induced eating with self-reports: Mission impossible or a piece of cake?

Comments on the original article, "Assessing yourself as an emotional eater: Mission impossible?" by C. Evers, D. T. D. de Ridder, and M. A. Adriaanse (see record 2009-20990-009). Results of a functional MRI study (Bohon, Stice, & Spoor, 2009) contradict the assertion that it is "impossible" to self-assess emotional eating because the self-report emotional eating scale of the Dutch Eating Behavior Questionnaire (DEBQ-em) predicted important individual differences in reward response during negative moods. Evers et al advance their argument in the context of results of four experiments where self-reported “emotional eaters” (DEBQ-em) did not eat more food during emotional encounters as compared to control conditions or “no emotional eaters.” However, the core characteristic of emotional eaters is not that they eat so much during distress (though binge eaters may do), but that they do not show the typical stress response of eating less (the typical stress response being loss of appetite because of physiological effects that mimic satiety) (Gold & Chrousos, 2002). Accordingly, the moderator effect of emotional eating during distress would be that. “No emotional eaters” eat less and “emotional eaters” eat the same or more compared to control conditions. Close inspection of the results of Evers et al reveals that their “no emotional eaters” did not show the typical stress response of eating less. This opens the possibility that the null findings of Evers et al may be simply explained by misclassification of “no emotional eaters” versus “emotional eaters” because of their use of median splits (a procedure notorious for possible misclassification of subjects into distinct groups). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

On the special status of "ego threats": Comment on Heatherton, Herman, and Polivy (1991).

Comments on a recent article by T. F. Heatherton et al (1991) in which they suggest that ego threats are a prerequisite to affectively induce disinhibition of food intake in restrained eaters and current dieters. In contrast, the present review suggests that mood induction procedures that involve no apparent ego threat (e.g., viewing a frightening film) can also prompt disinhibition in restrained eaters. Thus, any mood induction procedure that does not directly physically threaten the S may disinhibit restrained eaters. It is concluded that recommendations to focus future research on ego threats are premature and may serve to obscure the mechanisms by which changes in affective state influence intake in dieters. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Fear of fat, disregulated-restrained eating, and body-esteem: prevalence and gender differences among eight- to ten-year-old children

Examined whether: (a) societal directives to be thin are perceived among children, (b) discontent with body and attitudes and behaviors associated with eating disorders begin before adolescence, and (c) these differ by sex. These issues were assessed in 239 Grade 3 students. Scales of eating and weight attitudes and behaviors for this under-studied population were either created or modified from existing instruments. These 8- to 10-year-old children expressed weight, dieting, and physique concerns that reflect Western sociocultural values and preoccupation with body weight and dieting. Sex differences were examined and revealed several but not very reliable distinctions at this young age. These findings appear to be consistent with research on adolescents. The components that may lead to the development of an eating disorder or disregulated-restrained eating in a vulnerable adolescent may be both internalized and expressed at a very early age.     

Medicare's search for effective obesity treatments: Diets are not the answer.

The prevalence of obesity and its associated health problems have increased sharply in the past 2 decades. New revisions to Medicare policy will allow funding for obesity treatments of proven efficacy. The authors review studies of the long-term outcomes of calorie-restricting diets to assess whether dieting is an effective treatment for obesity. These studies show that one third to two thirds of dieters regain more weight than they lost on their diets, and these studies likely underestimate the extent to which dieting is counterproductive because of several methodological problems, all of which bias the studies toward showing successful weight loss maintenance. In addition, the studies do not provide consistent evidence that dieting results in significant health improvements, regardless of weight change. In sum, there is little support for the notion that diets lead to lasting weight loss or health benefits. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Binge eating onset in obese patients with binge eating disorder

In this study we examined whether obese women with binge eating disorder (BED) reporting earlier onset binge eating differed from those with later onset binge eating on salient clinical parameters. Subjects were 112 women who sought treatment for BED. Subjects with early (< or = age 18) and later onset (> age 18) did not differ in age, weight, body mass index, or severity of binge eating. Participants were interviewed using the Eating Disorder Examination (EDE) and the Structured Clinical Interview for DSM-III-R, and completed a weight and diet history questionnaire. Early-onset binge eaters were more likely than those with later-onset to binge-eat before dieting, to have early onset of obesity and dieting, to have longer binge-free periods, and more paternal obesity and binge eating. Early-onset binge eaters also reported more eating-disorders psychopathology, and they were more likely to report a lifetime history of bulimia nervosa and DSM-III-R mood disorder. These data suggest that there are marked differences among BED patients presenting for treatment. Further research is needed to determine whether these differences reflect a different etiology or have implications for treatment.     

The specific psychopathology of bulimia nervosa: A comparison with restrained and unrestrained (normal) eaters.

The hypothesis that patients with bulimia nervosa and restrained eaters exist on a simple continuum of psychopathology was tested in 60 Ss (20 bulimics, 20 restrained eaters, 20 unrestrained eaters). Regarding measures related to dieting behavior and physical appearance, the restrained eaters differed significantly from unrestrained eaters and were similar to bulimic patients except for level of psychopathology. The restrained eaters could not be distinguished from the unrestrained eaters with regard to measures representing interoceptive perception, self-esteem, and fears about interpersonal relationships. On these traits, bulimic patients could be clearly distinguished from the normal Ss. The results support a 2-component model of the psychopathology of bulimia nervosa. (PsycINFO Database Record (c) 2010 APA, all rights reserved)