Guido M. van Koningsbruggen

Why most dieters fail but some succeed: A goal conflict model of eating behavior

Theories of eating regulation often attribute overweight to a malfunction of homeostatic regulation of body weight. With the goal conflict model of eating, we present a new perspective that attributes the difficulty of chronic dieters (i.e., restrained eaters) in regulating their food intake to a conflict between 2 incompatible goals-namely, eating enjoyment and weight control. This model explains the findings of previous research and provides novel insights into the psychological mechanism responsible for both dietary failure and success. According to this model, although chronic dieters are motivated to pursue their weight control goal, they often fail in food-rich environments because they are surrounded by palatable food cues that strongly prime the goal of eating enjoyment. Due to the incompatibility of the eating enjoyment goal and the weight control goal, such increase in the activation of the eating enjoyment goal results in (a) an inhibition of the cognitive representation of the weight control goal and (b) preferential processing of palatable food stimuli. Both these processes interfere with the effective pursuit of the weight control goal and facilitate unhealthy eating. However, there is a minority of restrained eaters for whom, most likely due to past success in exerting self-control, tasty high-calorie food has become associated with weight control thoughts. For them, exposure to palatable food increases the accessibility of the weight control goal, enabling them to control their body weight in food-rich environments. Evidence for these proposed psychological mechanisms is provided, and implications for interventions are discussed.

As Pleasure Unfolds Hedonic Responses to Tempting Food

Why do chronic dieters often violate their dieting goals? One possibility is that they experience stronger hedonic responses to tempting food than normal eaters do. We scrutinized hedonic processing in dieters and normal eaters (a) by manipulating food preexposure and (b) by assessing both immediate and delayed hedonic responses to tempting food with an adapted affect-misattribution procedure. Without food preexposure, dieters showed less positive hedonic responses than normal eaters (Study 1). When preexposed to tempting-food stimuli, however, dieters exhibited more positive delayed hedonic responses than normal eaters (Studies 1 and 2). Furthermore, delayed hedonic responding was meaningfully related to self-reported power of food and state cravings (Study 2). These findings suggest that dieters experience difficulties in down-regulating hedonic affect when in a “hot” state and that self-regulation research may benefit from a greater emphasis on temporal dynamics rather than static differences.

Targeting impulsive processes of eating behavior via the internet. Effects on body weight

Because eating behavior can take on an impulsive nature many people experience difficulty with dieting to lose weight. Therefore, an experiment was conducted to test the effectiveness of two interventions targeting impulsive processes of eating behavior to facilitate weight loss: Implementation intentions to remind people about dieting versus a go/no-go task to change impulses toward palatable foods. Dieters performed an online training program (four times in 4 weeks) in which they were randomly assigned to a 2 (implementation intention condition: dieting versus control) × 2 (go/no-go task condition: food versus control) design. They formed either dieting implementation intentions (e.g., If I open the fridge I will think of dieting!) or control implementation intentions. Furthermore, they received either a go/no-go task in which behavioral stop signals were presented upon presentation of palatable foods (food go/no-go task), or upon control stimuli. Participants weight was measured in the laboratory before and after the intervention. Strength of participants dieting goal and their Body Mass Index (BMI; as a proxy for impulsiveness toward food) were examined as moderators. Results showed that both dieting implementation intentions and the food go/no-go task facilitated weight loss. Moreover, dieting implementation intentions facilitated weight loss particularly among people with a strong current dieting goal, whereas the food go/no-go task facilitated weight loss independent of this factor. Instead, the food go/no-go task, but not formation of dieting implementation intentions, was primarily effective among dieters with a relatively high BMI. These results provide the first preliminary evidence that interventions aimed at targeting impulsive eating-related processes via the internet can facilitate weight loss.

The Impact of Self-Affirmation on Health-Behavior Change: A Meta-Analysis

OBJECTIVESnSelf-affirmation (induced by reflecting upon important values, attributes, or social relations) appears to reduce defensive resistance to health-risk information and increase subsequent readiness for health behavior change. However, these effects of self-affirmation have yet to be subjected to formal, quantitative integration. Consequently, the current article reports a meta-analysis of the impact of self-affirmation on outcomes at 3 key points in the process of health-behavior change: (a) message acceptance, (b) intentions to change, and (c) subsequent behavior.nnnMETHODnThe literature search identified 144 experimental tests of the effects of manipulating self-affirmation on these outcomes. Effect sizes were extracted and meta-analyzed.nnnRESULTSnAcross 34 tests of message acceptance (N = 3,433), 64 tests of intentions (N = 5,564), and 46 tests of behavior (N = 2,715), random effects models indicated small but reliable positive effects of self-affirmation on each outcome: acceptance, d+ = .17(CI = .03 to .31); intentions, d+ = .14 (CI = .05 to .23); behavior, d+ = .32 (CI = .19 to .44). Findings held across a range of health problems and behaviors.nnnCONCLUSIONSnThe results suggest that deploying self-affirmation inductions alongside persuasive health information has positive effects, promoting message acceptance, intentions to change, and subsequent behavior. Though the effects are small in magnitude, they are comparable to those obtained in meta-analyses of other health-behavior change interventions. These findings are relevant to researchers and practitioners working to understand why people resist beneficial health information and how such resistance can be reduced.

Don't derogate this message! Self-affirmation promotes online type 2 diabetes risk test taking

The aim of the present study was to examine whether self-affirmation promotes acceptance of threatening type 2 diabetes information and risk-testing behaviour. In an experimental study (N = 84), we manipulated self-affirmation by allowing participants to affirm a value that was either personally important or unimportant to them, and measured participants risk level prior to reading threatening type 2 diabetes information. As dependent variables, we measured message derogation, intentions to do an online type 2 diabetes risk test and online risk-testing behaviour. Findings showed that self-affirmation decreased message derogation, increased intentions to do an online risk test and promoted online risk test taking among at-risk participants. Among participants not at-risk, self-affirmation decreased intentions and online risk test taking. Therefore, it is concluded, that for an at-risk population self-affirmation can decrease defensive responses to threatening health information and promote (online) risk test taking for diseases.

Towards understanding pleasure at the misfortunes of others: The impact of self-evaluation threat on schadenfreude

In two experiments we demonstrated that a self-evaluation threat intensifies schadenfreude. Moreover, we showed that a self-evaluation threat predicts schadenfreude in both threat-related and threat-unrelated domains and when controlling for feelings of envy and dislike towards the target and evaluations of the misfortune in terms of deservingness. These findings indicate that anothers misfortune may be pleasing because it satisfies peoples concern for a positive self-view and a sense of self-worth.

How self-affirmation reduces defensive processing of threatening health information: Evidence at the implicit level.

OBJECTIVEnSelf-affirmation reduces defensive responses to threatening health information, but little is known about the cognitive processes instigated by self-affirmation. This study tested whether self-affirmation increases responsiveness to threatening health information at the implicit level.nnnDESIGNnIn an experimental study (N = 84), the authors presented high- (coffee drinkers) and low-relevance (noncoffee drinkers) participants with threatening health information linking caffeine consumption to health problems. Prior to reading this information, the authors manipulated self-affirmation.nnnMAIN OUTCOME MEASURESnParticipants completed an unobtrusive lexical decision task to measure the accessibility of threat-related cognitions and reported their perceptions of message quality and intentions to take precautions.nnnRESULTSnAmong high-relevance participants, self-affirmation increased the accessibility of threat-related cognitions, increased perceptions of message quality, and promoted adaptive behavioral intentions.nnnCONCLUSIONnThe findings suggest that self-affirmation can increase implicit responsiveness to threatening health information among a target audience, that is, people for whom the health information is highly relevant.

“So You Wanna Be a Pop Star?”: Schadenfreude Following Another's Misfortune on TV

In this experiment we demonstrate that low self-evaluation individuals experience more schadenfreude following an unfavorable performance of a contestant on a TV show after receiving negative feedback on a self-relevant task, as compared with those who received positive feedback. Moreover, we show that high self-evaluation individuals do not differ in their experience of schadenfreude as a function of feedback. These findings corroborate our argument that in a “double whammy” condition (i.e., low self-evaluation and induced self-threat), individuals will be more motivated to restore their self-worth and, consequently, experience more pleasure at the misfortunes of others.

Self-Affirmation Before Exposure to Health Communications Promotes Intentions and Health Behavior Change by Increasing Anticipated Regret

Health-risk information can elicit negative emotions like anticipated regret that may positively affect health persuasion. The beneficial impact of such emotions is undermined when target audiences respond defensively to the threatening information. We tested whether self-affirming (reflecting on cherished attributes) before message exposure can be used as strategy to enhance the experience of anticipated regret. Women were self-affirmed or not before exposure to a message promoting fruit and vegetable consumption. Self-affirmation increased anticipated regret and intentions reported following message exposure and consumption in the week after the intervention; regret mediated the affirmation effect on intentions. Moreover, results suggest that anticipated regret and intentions are serial mediators linking self-affirmation and behavior. By demonstrating the mediating role of anticipated regret, we provide insights into how self-affirmation may promote healthy intentions and behavior following health message exposure. Self-affirmation techniques could thus potentially be used to increase the effectiveness of health communication efforts.

Spontaneous Hedonic Reactions to Social Media Cues

Why is it so difficult to resist the desire to use social media? One possibility is that frequent social media users possess strong and spontaneous hedonic reactions to social media cues, which, in turn, makes it difficult to resist social media temptations. In two studies (total Nu2009=u2009200), we investigated less-frequent and frequent social media users spontaneous hedonic reactions to social media cues using the Affect Misattribution Procedure-an implicit measure of affective reactions. Results demonstrated that frequent social media users showed more favorable affective reactions in response to social media (vs. control) cues, whereas less-frequent social media users affective reactions did not differ between social media and control cues (Studies 1 and 2). Moreover, the spontaneous hedonic reactions to social media (vs. control) cues were related to self-reported cravings to use social media and partially accounted for the link between social media use and social media cravings (Study 2). These findings suggest that frequent social media users spontaneous hedonic reactions in response to social media cues might contribute to their difficulties in resisting desires to use social media.