Maintaining healthy eating behaviour: experiences and perceptions of young adults

Purpose – The prevalence of overweight and obesity is increasing, particularly in young adults who recently have been shown to experience more weight gain than other demographics. Research has focused on factors leading to this weight gain, implicating the abundance of unhealthy foods in the direct environment, yet limited research has examined why some individuals are able to successfully regulate their eating behaviour in this “food-rich environment”. The aim of this research was to explore the perceptions and experiences of successful healthy eaters in order to determine factors that distinguish this group from unhealthy eaters. Design/methodology/approach – Thirty-five healthy weight young adults, who considered themselves to be healthy eaters, participated in seven semi-structured focus groups. Key questions examined how these individuals regulated their eating behaviour and their perceptions regarding such self-control processes. Findings – Thematic analysis revealed that individuals who are successful at maintaining healthy eating behaviour perceive the same barriers as non-successful individuals, yet are able to employ self-control techniques to overcome these barriers. Additionally, continually exerting self-control appeared to facilitate the formation of healthy eating habits. Research limitations/implications – Future research may benefit from attempting to modify self-control ability and develop healthy habits. Originality/value – While factors leading to obesity and the cognitions of those who are overweight have been extensively examined, limited research has focused on those who are able to regulate their eating behaviour. Additionally, limited qualitative research has examined implicit theories of self-control in an eating context

Breaking bad habits by improving executive function in individuals with obesity

Background: Two primary factors that contribute to obesity are unhealthy eating and sedentary behavior. These behaviors are particularly difficult to change in the long-term because they are often enacted habitually. Cognitive Remediation Therapy has been modified and applied to the treatment of obesity (CRT-O) with preliminary results of a randomized controlled trial demonstrating significant weight loss and improvements in executive function. The objective of this study was to conduct a secondary data analysis of the CRT-O trial to evaluate whether CRT-O reduces unhealthy habits that contribute to obesity via improvements in executive function. Method: Eighty participants with obesity were randomized to CRT-O or control. Measures of executive function (Wisconsin Card Sort Task and Trail Making Task) and unhealthy eating and sedentary behavior habits were administered at baseline, post-intervention and at 3 month follow-up. Results: Participants receiving CRT-O demonstrated improvements in both measures of executive function and reductions in both unhealthy habit outcomes compared to control. Mediation analyses revealed that change in one element of executive function performance (Wisconsin Card Sort Task perseverance errors) mediated the effect of CRT-O on changes in both habit outcomes. Conclusion: These results suggest that the effectiveness of CRT-O may result from the disruption of unhealthy habits made possible by improvements in executive function. In particular, it appears that cognitive flexibil ity, as measured by the Wisconsin Card Sort task, is a key mechanism in this process. Improving cognitive flexibility may enable individuals to capitalise on interruptions in unhealthy habits by adjusting their behavior in line with their weight loss goals rather than persisting with an unhealthy choice. Trial registration: The RCT was registered with the Australian New Zealand Registry of Clinical Trials (trial id: ACTRN12613000537752)

The role of self-regulation in predicting sleep hygiene in university students

University students have poor sleep hygiene, leading to poorer health. Facets of self-regulation such as planning, behavioural inhibition, cognitive flexibility and working memory were explored in relation to three sleep hygiene behaviours: Avoiding stress or anxiety before bed, avoiding going to bed hungry or thirsty, and making the bedroom restful. One hundred and thirty-seven participants took part in an Internet-based survey over two time points separated by a period of two weeks. Only cognitive flexibility and behavioural inhibition correlated with sleep hygiene. Cognitive flexibility significantly predicted an aspect of sleep hygiene after controlling for past behaviour. However, when past behaviour was controlled for, behavioural inhibition no longer predicted sleep hygiene. Thus, cognitive flexibility may play a role in explaining sleep hygiene; however, behavioural inhibition does not appear as important as previously assumed. Further research could build on this study to determine whether cognitive flexibility can be experimentally improved

Comparison of three nudge interventions (priming, default option, and perceived variety) to promote vegetable consumption in a self-service buffet setting.

BACKGROUND: Dietary choices in out-of-home eating are key for individual as well as for public health. These dietary choices are caused by a wide array of determinants, one of which is automatic decision-making. Nudging is attracting considerable interest due to its understanding and application of heuristic biases among consumers. The aim of this study is to test and compare three nudges in promoting vegetable consumption among test persons in a food lab-based experiment. METHODS: The initial sample consisted of 88 participants recruited in Copenhagen, Denmark. Each study participant was randomly assigned to one of the three experiments: priming, default and perceived variety. The priming arm of the experiment consisted of creating a leafy environment with green plants and an odour of herbs. In the default arm of the experiment, the salad was pre-portioned into a bowl containing 200g of vegetables. The third experiment divided the pre-mixed salad into each of its components, to increase the visual variety of vegetables, yet not providing an actual increase in items. Each individual was partaking twice thus serving as her/his own control, randomly assigned to start with control or experimental setting. RESULTS: The default experiment successfully increased the energy intake from vegetables among the study participants (124 kcal vs. 90 kcal in control, p<0.01). Both the priming condition and perceived variety reduced the total energy intake among the study participants (169 kcal, p<0.01 and 124 kcal, p<0.01, respectively), mainly through a decrease in the meat-based meal component. CONCLUSIONS: Considerable progress has been made with regard to understanding the use of nudging in promoting a healthier meal composition, including increasing vegetable intake. This study suggests that the nature of a nudge-based intervention can have different effects, whether it is increasing intake of healthy components, or limiting intake of unhealthy meal components. This work has demonstrated that consumer behaviour can be influenced without restricting or providing incentives for behaviour change. The present findings have promising application to the foodservice sector

Individual differences in executive function predict distinct eating behaviours

Executive function has been shown to influence the performance of health behaviours. Healthy eating involves both the inhibitory behaviour of consuming low amounts of saturated fat, and the initiatory behaviour of consuming fruit and vegetables. Based on this distinction, it was hypothesised that these behaviours would have different determinants. Measures of inhibitory control and updating were administered to 115 participants across 2 days. One week later saturated fat intake and fruit and vegetable consumption were measured. Regression analyses revealed a double dissociation effect between the different executive function variables and the prediction of eating behaviours. Specifically, inhibitory control, but not updating, predict saturated fat intake, whilst updating, but not inhibitory control, was related to fruit and vegetable consumption. In both cases, better executive function capacity was associated with healthier eating behaviour. The results support the idea that behaviours that require stopping a response such as limiting saturated fat intake, have different determinants to those that require the initiation of a response such as fruit and vegetable consumption. The findings suggest that interventions aimed at improving these behaviours should address the relevant facet of executive function

Implicit aggression and forensic psychology

Uncontrolled outbursts of aggression and violence cost the criminal justice system millions of pounds, per annum. For instance, aggression and violence toward frontline hospital staff cost the UK government over £60 million per year. Aggression and violent crime statistics indicate over 1 million reported offences, per annum; while unreported offences are much higher. Why some people are better able to control aggression than others is still not fully understood. Recently, researchers have highlighted the need to incorporate impulsive processes into models of aggression. The current research is the first to investigate the role of self-control, measured by both explicit questionnaires and an implicit association test, on self-reported aggression. Results indicated higher levels of implicit and explicit self-control predicted lower self-report aggression scores. Gender differences in the findings indicated that for males, higher levels of implicit self-control predicted lower physical aggression scores; whereas for females, higher implicit self-control predicted lower physical, verbal, and anger aggression scores. The current findings provide the first indication that both implicit and explicit self-control has a central role in aggressive behaviour. The discussion focuses on methods to reduce aggression that incorporate strategies to change implicit processes

Impulsivity, aggression, and sequence analyses

Uncontrolled outbursts of aggression and violence cost the criminal justice system millions of pounds, per annum. For instance, aggression and violence toward frontline hospital staff cost the UK government over £60 million per year. Aggression and violent crime statistics indicate over 1 million reported offences, per annum; while unreported offences are much higher. Why some people are better able to control aggression than others is still not fully understood. Recently, researchers have highlighted the need to incorporate impulsive processes into models of aggression. The current research is the first to investigate the role of self-control, measured by both explicit questionnaires and an implicit association test, on self-reported aggression. Results indicated higher levels of implicit and explicit self-control predicted lower self-report aggression scores. Gender differences in the findings indicated that for males, higher levels of implicit self-control predicted lower physical aggression scores; whereas for females, higher implicit self-control predicted lower physical, verbal, and anger aggression scores. The current findings provide the first indication that both implicit and explicit self-control has a central role in aggressive behaviour. The discussion focuses on methods to reduce aggression that incorporate strategies to change implicit processes