There is increased interest in self-selected exclusionary diet patterns, specifically vegetarian, vegan, and gluten-free (GF) diets, but there is a lack of research exploring the beliefs and behaviours surrounding these diets in Canadians capable of bearing children (CCBC). The goal of this study was to explore the beliefs and behaviours of CCBC who follow vegetarian, vegan, and/or GF diets using mixed methods. A self-administered online Qualtrics™ survey containing 102 questions was conducted using open text and closed format questions. Continuous variables were summarized using mean and standard deviation while percentages were used to summarize categorical variables. Qualitative data was analysed using thematic analysis. A total of 271 CCBC between 18–45 years of age were analysed, with 27%, 22%, and 3.7% indicating they followed a vegan, vegetarian, and/or GF diet, respectively. Three main themes emerged that influenced CCBC beliefs about their chosen diet. The belief that these diets are healthy or could impart health in some way, was the main reason for following their chosen diet, especially in those who identified as vegetarian. Ethical/moral concerns, primarily around animal welfare and the environment, was the second theme for following their chosen dietary pattern, especially amongst those who identified as vegan. Perception of social judgement in the forms of criticism, guilt, and isolation were noted by some CCBC, with family, friends, and colleagues interacting differently with them because of their dietary choices. These findings serve to enhance our understanding of the beliefs and behaviours of CCBC who choose to follow exclusionary diets.

The association between everyday activities, health and subjective wellbeing in older adults has mostly been examined using different activities as separate variables. Which activities are likely to come together in individuals’ daily time-use patterns, or in what context, has not yet been analysed. This study looks at a broad range of spontaneously reported activities, their location and social context to identify latent behavioural classes. The data used in the study came from a sample of 200 non-institutionalised adults aged 65 and above. Activity data were collected using the Experience Sampling Method. Generalised structural equation modelling was used to identify the classes. Three distinctive behavioural classes, representing different lifestyles, emerged: passive domiciliary, active functional and social recreational. They constituted 30, 53 and 17 per cent of the sample, respectively. Class membership was related to individuals’ age, education and selected dimensions of health measured using the Nottingham Health Profile: energy levels and emotional response. There was consistency between the objectively measured class and an individual's subjective assessment of their physical and emotional health. While both class membership and subjective wellbeing were associated with health, the relationship between class and wellbeing was weak and fully explained by socio-demographic and health-related variables.

Folate is essential for fetal development, and its deficiency during gestation causes behavioural deficits in the offspring. The present study investigated its influence during weaning on brain function in the pups of rats that were put on a folate-deficient (FD) diet on postnatal day (PND) 1. Systemic folate deficiency in pups on the FD diet (n 15) was evident from the dramatically lower hepatic folate concentrations (median 23·7, range 8·1–48·4 ng/mg protein) and higher homocysteine concentrations (median 27·7, range 14·7–45·5 pmol/mg protein), respectively, compared with those of pups on the normal diet (ND; n 9) (median 114·5, range 64·5–158·5 ng/mg protein and median 15·5, range 11·6–18·9 pmol/mg protein) on PND 23. Brain folate concentrations although low were similar in pups on the FD diet (median 10·5, range 5·5–24·5 ng/mg protein) and ND (median 11·1, range 7·1–24·2 ng/mg protein). There was a high accumulation of homocysteine in the brain of FD pups, mostly in the hippocampus (median 58·1, range 40·8–99·7 pmol/mg protein) and cerebellum (median 69·1, range 50·8–126·6 pmol/mg protein), indicating metabolic folate deficiency despite normal brain folate concentrations. Developmental deficits or autistic traits were more frequent in the FD group than in the ND group and repetitive self-grooming occurred, on average, three times (range 1–8) v. once (range 0–3) during 5 min, respectively. Long-term memory or spatial learning and set-shifting deficits affected 12 to 62 % of rats in the FD group compared with none in the ND group. Post-weaning folic acid supplementation did not correct these deficits. These observations indicate that folate deficiency during weaning affects postnatal development even when gestational folate supply is normal.

Background: Different body-related behaviours and cognitions (checking, avoidance, comparison, display) have been shown to be related to unhealthy eating attitudes in a non-clinical sample. Aims: This study tested whether the use of body-related behaviours is higher in eating-disordered women than in non-clinical women. It also examined whether the use of body-related behaviours is associated with psychological characteristics (particularly anxiety, depression and narcissistic characteristics), controlling for age and eating pathology. Method: Ninety-nine adult women with diagnosed eating disorders (mean age = 30.4 years, SD = 9.44; mean body mass index = 21.9, SD = 6.39) completed standardized measures of eating pathology, anxiety and depression, narcissistic characteristics, and body-related behaviours and cognitions. Results: The Body-Related Behaviours Scale (BRBS) had acceptable levels of internal consistency in this group, and its scales were only weakly to moderately correlated with each other. There were no differences between diagnostic groups, but the clinical group had higher scores that a previous non-clinical sample on three of the scales. The four body-related behaviours had different patterns of association with eating pathology, depression and narcissistic features. However, anxiety was not associated with BRBS scores. Conclusions: The findings support the importance of a wide range of body-related behaviours and cognitions in understanding the eating disorders. However, the lack of an association with anxiety is counter to the suggestion that the various behaviours measured by the BRBS reflect safety behaviours on the part of sufferers. Depression and narcissistic features might be more important in maintaining such behaviours.

Background: Eating disturbances and poor body image are maintained by body-related safety behaviours and their associated cognitions. These include body checking, avoidance, comparison and display, which can be seen as safety behaviours, maintaining eating pathology and poor body image. It is not clear from the existing literature whether these behavioural and cognitive patterns are independently related to eating psychopathology. Method: This study of a non-clinical group of women and men (N = 250) explored the association of eating attitudes and behaviours with these four elements of body-related behaviours and cognitions. Results: It was found that each of the four elements had independent associations with eating attitudes and behaviours. Those associations were not explained by anxiety or depression levels. Discussion: Whilst these findings require study within a clinical group, they suggest that all four elements of body-related behaviours and cognitions need to be considered as potential maintaining factors when formulating eating psychopathology and body image disturbance.

The extent to which cognitive behaviour therapy can be used with children is unclear. In meta analyses older children and teenagers seem to derive greater benefit than young children. This may be because the cognitive immaturity of young children means that they cannot manage the cognitive demands of cognitive behaviour therapy. This paper seeks to establish how well children aged 7-8 and aged 10-11 can complete a task requiring them to distinguish between thoughts and behaviours (based on Greenberger & Padesky, 1995). Half of the children were provided with a visual cue and half were not. The effects of age, the visual cue, and verbal IQ on performance were examined. Seventy-two children were randomized to the cue and no-cue condition and individually tested during school time. Both age groups performed well and there was a significant difference between older and younger children, with the older children performing better. Visual cues did not aid performance. Verbal IQ was significantly associated with performance in the younger but not the older children. The implications of these results for the delivery of cognitive behaviour therapy with children and future research are discussed.

The small population and limited range of the Samoan flying fox Pteropus samoensis has generated concern regarding the survival of this large, diurnally active bat. During 1995–96, surveys were conducted monthly in six study valleys on Tutuila Island, American Samoa, to assess population size. The amount of diurnal and nocturnal activity was investigated to gauge the accuracy of diurnal surveys, and territorial behaviours were observed to determine how they influenced local dispersion. Individuals showed long-term fidelity to a series of roosts and small core areas that were used both nocturnally and diurnally. Territorial defence was observed only of temporary feeding territories in fruiting or flowering trees. Bats defended food resources by aerial patrols and extended aerial chases in which intruders were frequently bitten. Foraging movements changed seasonally, with up to 80% of individuals observed bypassing study valleys. The mean density of bats observed within the study valleys was 6.1 bats/km2 (range = 0.9–18.5 bats/km2). Pteropus samoensis were active both nocturnally and diurnally with greatest activity in late afternoon and evening, 16:00–22:00. Because bats were most active at night, it is probable that daytime surveys of flying bats undercount the number of individuals present. Greatest densities were found in valleys that were contiguous with large tracts of forest inaccessible to people. Most observations of roosting bats were of solitary males on dead branches that jutted above the forest canopy, while females and dependant young roosted below the canopy, hidden within vegetation. Adult male–female pairs were rarely seen together other than during the mating period in August–January. The population has increased following a ban on hunting, but reliance on mature forest makes long-term species survival dependant on protection of the limited mature forest remaining and continued hunting restrictions.