Susanne Pedersen

An exploration of adolescent snacking conventions and dilemmas

Purpose – Snacking has been characterized as normatively unrestricted and identified as one of the main causes of adolescent obesity. The purpose of this paper is not to question the relation between obesity and snacking, but to ask to which extent adolescent snacking is socially unrestricted and to explore adolescent perceptions of the potential conventions and dilemmas involved in snacking.Design/methodology/approach – Referring to previous research in food choice dilemmas and conventions, the paper starts out by discussing potential implications for adolescent snacking in different social contexts. Following this, the design, implementation and results of three focus groups, aiming at an exploration of adolescent snacking perceptions is described.Findings – By identifying two distinct forms of adolescent snacking, i.e. “in‐between meals” and “fun snacks”, the results of the focus groups falsify the perception of snacking as socially unrestricted and offer some interesting insights into the conventions,...

A low-density SNP array for analyzing differential selection in freshwater and marine populations of threespine stickleback (Gasterosteus aculeatus)

BackgroundThe threespine stickleback (Gasterosteus aculeatus) has become an important model species for studying both contemporary and parallel evolution. In particular, differential adaptation to freshwater and marine environments has led to high differentiation between freshwater and marine stickleback populations at the phenotypic trait of lateral plate morphology and the underlying candidate gene Ectodysplacin (EDA). Many studies have focused on this trait and candidate gene, although other genes involved in marine-freshwater adaptation may be equally important. In order to develop a resource for rapid and cost efficient analysis of genetic divergence between freshwater and marine sticklebacks, we generated a low-density SNP (Single Nucleotide Polymorphism) array encompassing markers of chromosome regions under putative directional selection, along with neutral markers for background.ResultsRAD (Restriction site Associated DNA) sequencing of sixty individuals representing two freshwater and one marine population led to the identification of 33,993 SNP markers. Ninety-six of these were chosen for the low-density SNP array, among which 70 represented SNPs under putatively directional selection in freshwater vs. marine environments, whereas 26 SNPs were assumed to be neutral. Annotation of these regions revealed several genes that are candidates for affecting stickleback phenotypic variation, some of which have been observed in previous studies whereas others are new.ConclusionsWe have developed a cost-efficient low-density SNP array that allows for rapid screening of polymorphisms in threespine stickleback. The array provides a valuable tool for analyzing adaptive divergence between freshwater and marine stickleback populations beyond the well-established candidate gene Ectodysplacin (EDA).

How important is country-of-origin for organic food consumers? A review of the literature and suggestions for future research

Purpose The purpose of this paper is to review the literature on the country-of-origin (COO) effect in the context of organic food and develop suggestions for further research in this area. Research has investigated COO effects and consumer responses to organic food, but there is little research on the combination of the two. Design/methodology/approach A narrative review of two research streams and their intersection, forming the basis for the development of a research agenda. Findings There are few studies analysing the possible interaction between the effects of organic and COO on consumers’ food preferences and choices. In general, COO seems to lose impact when other quality cues are salient. This suggests a lower impact of COO for organic than for conventional food products. However, there is still no research on the possible impact of organic labelling in categories where products from a foreign country are able to demand a premium, and little is known about consumer preferences for different import countries regarding organic food. Six potential future research directions are suggested. Research limitations/implications There is a need for research that more systematically investigates the possible interactions between COO and organic labelling on consumers’ food product preferences and choices. A research agenda is suggested as a starting point. Originality/value This literature review highlights the lack of research on the interaction between COO effects and consumer responses to organic food. The literature review creates a basis for future research and a possible research agenda is suggested.

Attribution of weight regain to emotional reasons amongst European adults with overweight and obesity who regained weight following a weight loss attempt

PurposeDespite the wide availability of effective weight loss programmes, maintenance of weight loss remains challenging. Difficulties in emotion regulation are associated with binge eating and may represent one barrier to long-term intervention effectiveness in obesity. The purpose of this study was to determine the relationship between emotion regulation difficulties and the extent of weight regain in a sample of adults who had lost, and then regained, weight, and to examine the characteristics associated with emotional difficulties.Methods2000 adults from three European countries (UK, Portugal, and Denmark) completed an online survey assessing self-reported weight loss and regain following their most recent weight loss attempt. They also completed a binge eating disorder screening questionnaire and, if they had regained weight, were asked if they attributed it to any emotional factors (a proxy for emotion regulation difficulties). Spearman’s correlations and logistic regression were used to assess the associations between emotion regulation, weight regain, and strategy use.ResultsEmotion regulation difficulties were associated with greater weight regain (N = 1594 who lost and regained weight). Attribution to emotional reasons was associated with younger age, female gender, loss of control and binge eating, lower perceptions of success at maintenance, using more dietary and self-regulatory strategies in weight loss, and fewer dietary strategies in maintenance.ConclusionsWeight-related emotion regulation difficulties are common amongst regainers and are associated with regaining more weight. Affected individuals are already making frequent use of behavioural strategies during weight loss, but do not apply these consistently beyond active attempts. Simply encouraging the use of more numerous strategies, without concurrently teaching emotion regulation skills, may not be an effective means to improving weight outcomes in this group.Level of evidenceLevel V, descriptive (cross-sectional) study.