A dual-process psychobiological model of temperament predicts liking and wanting for food and trait disinhibition

A dual-process model of temperament, incorporating the Behavioural Inhibition System (BIS), Behavioural Activation System (BAS) and effortful control (EC), may help to predict hedonic responses to palatable food and trait disinhibition. Purpose This study aimed to determine if the BIS, BAS and EC predicted liking and wanting for high-fat, sweet foods in adults with overweight and obesity, and if collectively, these variables predicted the eating behaviour trait of Disinhibition. Methods 168 adults (104 females, mean BMI = 33.3 kg/m2) completed the Three Factor Eating Questionnaire, the Carver and White BIS/BAS scales, the Adult Temperament Questionnaire-Effortful Control Scale – Short Form and the Leeds Food Preference Questionnaire. The strength of the BIS, BAS and EC in predicting wanting and liking for high-fat sweet foods, and trait Disinhibition was assessed using hierarchical multiple regression. Results Both the BIS and EC predicted liking, F (6, 161) = 5.05, p < .001, R2 = 0.16, and EC inversely predicted wanting, F (6, 161) = 3.28, p = .005, R2 = 0.11. The BIS, EC and liking predicted, F (8, 159) = 11.0, p < .001, R2 = 0.36, and explained 36% of Disinhibition. The BAS did not predict wanting, liking or Disinhibition. Conclusions These results demonstrate that a sensitive BIS and a lower level of effortful control predicts food reward and Disinhibition in overweight and obese adults. Consequently, interventions that aim to increase effortful control and reduce BIS reactivity may be beneficial for reducing hedonically motivated, disinhibited eating behaviour

Australian dietitians' beliefs and attitudes towards weight loss counselling and health at every size counselling for larger-bodied clients

Aim: Research suggests that dietitians now employ weight-neutral (WN) approaches (Health at Every Size (HAES), Intuitive Eating and non-diet) as well as more traditional weight-centric (WC) approaches (weight loss counselling) to address adult weight concerns. This study aimed to compare the knowledge of and attitudes towards WN practice compared with WC practice in Australian dietitians who work with larger-bodied clients as delineated by practice approach. Methods: A cross-sectional web-based knowledge, attitudes and practices survey was conducted with Australian dietitians who counsel adults with a body mass index >25 kg/m2. Based on their responses, dietitians were categorised into WC (preferring weight loss counselling), WN (preferring HAES counselling) or mixed approach (MA). Between-group comparisons were conducted using Pearson's chi-squared tests for knowledge and practice and independent t-tests for attitudes. Results: Of the 317 respondents, 18.3% fulfilled the criteria for WN practitioners, 30.3% for WC practitioners and the remainder were classified as providing a MA. Weight-neutral approaches were more positively regarded generally than WC approaches (84.5% vs 53.9%) as well as considered professionally responsible (86% vs 58.7%) and perceived as more helpful for clients (61.2% vs 35%). Knowledge of WN practice goals was poor with only 36.9% (n = 117) of the participants indicating correctly that this mode of treatment is incompatible with a weight loss goal. Conclusions: Weight-neutral practice was considered acceptable by Australian dietetics professionals who counsel larger-bodied people regardless of their personal practice preference although many displayed inaccurate knowledge of WN approaches.</p