The Impact of Environmental Stress on Cognitive Performance: A Systematic Review.

OBJECTIVE: In this review, we detail the impact of environmental stress on cognitive and military task performance and highlight any individual characteristics or interventions which may mitigate any negative effect. BACKGROUND: Military personnel are often deployed in regions markedly different from their own, experiencing hot days, cold nights, and trips both above and below sea level. In spite of these stressors, high-level cognitive and operational performance must be maintained. METHOD: A systematic review of the electronic databases Medline (PubMed), EMBASE (Scopus), PsycINFO, and Web of Science was conducted from inception up to September 2018. Eligibility criteria included a healthy human cohort, an outcome of cognition or military task performance and assessment of an environmental condition. RESULTS: The search returned 113,850 records, of which 124 were included in the systematic review. Thirty-one studies examined the impact of heat stress on cognition; 20 of cold stress; 59 of altitude exposure; and 18 of being below sea level. CONCLUSION: The severity and duration of exposure to the environmental stressor affects the degree to which cognitive performance can be impaired, as does the complexity of the cognitive task and the skill or familiarity of the individual performing the task. APPLICATION: Strategies to improve cognitive performance in extreme environmental conditions should focus on reducing the magnitude of the physiological and perceptual disturbance caused by the stressor. Strategies may include acclimatization and habituation, being well skilled on the task, and reducing sensations of thermal stress with approaches such as head and neck cooling.

When zoo visitors "connect" with a zoo animal, what does that mean?

Connection with a zoo animal may increase conservation-mindedness in zoo visitors, potentially resulting in conservation-oriented behavior change. No research has attempted to establish what this "connection" actually means. Visitors (N = 85) to Melbourne Zoo were asked to name the animal with which they most connected, the extent to which they connected with it, and to qualitatively describe what it meant to connect with that animal. Many (but not all) participants connected with charismatic megafauna: primate, great ape, large carnivore, or large herbivore. Qualitative analysis revealed five common themes in the meaning of connection: Appreciation, Attribution, Inspires Emotions, Interaction, and Proximity. Overall connection level was significantly correlated with perceptions of conservation caring for the chosen species. Future research should aim to determine what factors affect a zoo visitor's connection level, which could impact attitudes and behaviors toward conservation.

Wildlife Photos on Social Media: A Quantitative Content Analysis of Conservation Organisations' Instagram Images.

Wildlife populations are vanishing at alarmingly high rates. This issue is being addressed by organisations around the world and when utilizing social media sites like Instagram, images are potentially more powerful than words at conveying crucial conservation messages and garnering public support. However, different elements of these images have been shown to potentially have either positive or negative effects on viewers' attitudes and behaviours towards wildlife and towards the organisation posting the image. This study used a quantitative content analysis to assess the most common and engaging elements of wildlife images posted to Instagram in 2020 and 2021, using Australian conservation organisations as a case study. A total of 670 wildlife images from the Instagram accounts of 160 conservation organisation Instagram accounts were coded and analysed. Results highlight that the most common image elements used included natural backgrounds, mammals and birds, and no human presence. In addition, it was found that the taxon of the animal featured in a post and the presence of humans did not impact engagement levels. Our findings highlight the potential for Instagram posts to feature and promote a wide range of currently underrepresented species, and for conservation organisations to be able to confidently share and post images that promote positive perceptions of both the animal and the conservation organisation.

Challenges and successes to the implementation of a zoo conservation-education program.

Zoo conservation-education programs have potential to address biodiversity loss, although evidence of their effectiveness to encourage social change is in its infancy. Moreover, how a program is implemented may influence program efficacy, yet there is little evidence of the factors that shape this process in zoos. Accordingly, through a process evaluation of Zoos Victoria's 'When Balloons Fly" (WBF) conservation-education program against marine debris, we identified barriers and enablers to the implementation of the program which can be addressed to improve future initiatives. Between April-May 2018, 24 Zoos Victoria professionals completed an online survey focussed on identifying challenges and successes in implementing WBF. Four participants additionally completed a follow-up telephone interview. Themes were identified and organised according to the model of diffusion in service organisations (Greenhalgh, Robert, Macfarlane, Bate, & Kyriakidou, 2004). Our results illuminate that features of the organisation (e.g., structure, culture) rather than features of individuals (e.g., skills, motivation) or characteristics of the conservation-education program itself (e.g., messaging), were most influential to implementation success. Based on these findings, attention to the organisational context is critical for promoting and evaluating the success of conservation-education programs and must be given significant attention alongside program characteristics and staff capability to deliver them.

Human Positioning in Close-Encounter Photographs and the Effect on Public Perceptions of Zoo Animals.

With the rising popularity of social media, conservation organisations and zoos need to understand its impact on public perceptions of the animals they house and their role in conservation. In addition, many zoos offer close-encounter experiences, and visitors frequently share images from these experiences online. This study measured the effects that viewing such encounter images had on public perceptions of both the zoo and the animals they saw. One of sixteen images was randomly presented to participants in two samples: one of Zoo Community followers and members of Zoos Victoria (n = 963), and a representative sample of the Australian public (n = 1619). Each image featured one of four animals (Eclectus parrot, Kangaroo Island kangaroo, Monteith's leaf insect, Centralian carpet python) and one of four human positions (human and animal touching, human and animal ~30 cm apart, human and animal ~1 m apart, animal alone). Results indicated that viewing different animals and the different human positions within these human-animal encounter images can affect public perceptions of zoo animals. In particular, the closer the proximity of a human to an animal in an image, the more likely respondents were to think that the animal was not displaying a natural behaviour and the more likely it was for General Public respondents to think that the animal would make a good pet. These findings can be used by zoos, wildlife tourism, and media organisations to ensure that they are sending clear, positive, and intended messages about zoo facilities and animals, as well as providing insights into animal encounter images in wider settings.

Perceptions of Responsible Cat Ownership Behaviors among a Convenience Sample of Australians.

Responsible cat ownership is important for keeping pet cats and wildlife safe. Much research investigating levels of compliance with and attitudes towards responsible cat ownership practices has focused on cat owners. Non-owner attitudes are relevant because their opinions may encourage cat-owning friends and family to engage (or not) in a cat management practice. The aim of this study was to determine levels of compliance with responsible cat ownership practices among cat owners, as well as attitudes towards those behaviors by owners and non-owners alike. An online survey was completed by 6808 people living in Australia who were recruited via companion animal or wildlife interest groups on social media. Frequency data were used to measure owner compliance with responsible cat ownership behaviors and t-tests were used to determine whether owners and non-owners differed in their attitudes towards these behaviors. Owner compliance with responsible practices ranged from 46.5% (complete cat containment all day and night) to 76.9% (cat is de-sexed). Owner attitudes towards these practices were generally more positive than the reported levels of management practices implemented for their own cat. For example, 47.3% of owners agreed or strongly agreed that cats should always be contained and 88.6% agreed that cats should be contained at night. Non-owners were more likely than owners to agree that cats should be contained during the day, but there was no difference for containment at night. Owners were more likely to report that cats should be de-sexed. These results can be used to inform campaigns aimed at increasing compliance with responsible cat ownership behaviors.

Uncovering meaning: how nursing knowledge changes policy in practice.

What ethical values, assumptions, and beliefs guide nursing practice today? What is the purpose and intent of policy in relationship to nursing practice? What underlying assumptions, values, and beliefs are missed in policy development that is not informed by nursing knowledge? These are some of the questions the authors attempt to answer in this paper. They examine some of the ethical dilemmas that arise when nurses are required to enforce policy that conflicts with nursing theory. A description of how nursing theory informs miss-takes (that is, missed assumptions, missed understandings, missed views and values) highlights how nursing knowledge changes policy in practice.

Buses, cars, bicycles and walkers: the influence of the type of human transport on the flight responses of waterbirds.

One way to manage disturbance to waterbirds in natural areas where humans require access is to promote the occurrence of stimuli for which birds tolerate closer approaches, and so cause fewer responses. We conducted 730 experimental approaches to 39 species of waterbird, using five stimulus types (single walker, three walkers, bicycle, car and bus) selected to mimic different human management options available for a controlled access, Ramsar-listed wetland. Across species, where differences existed (56% of 25 cases), motor vehicles always evoked shorter flight-initiation distances (FID) than humans on foot. The influence of stimulus type on FID varied across four species for which enough data were available for complete cross-stimulus analysis. All four varied FID in relation to stimuli, differing in 4 to 7 of 10 possible comparisons. Where differences occurred, the effect size was generally modest, suggesting that managing stimulus type (e.g. by requiring people to use vehicles) may have species-specific, modest benefits, at least for the waterbirds we studied. However, different stimulus types have different capacities to reduce the frequency of disturbance (i.e. by carrying more people) and vary in their capacity to travel around important habitat.

Nutrition knowledge: a mediator between socioeconomic position and diet quality in Australian first-time mothers.

BACKGROUND: Mothers are important role models for eating and are gatekeepers of food in the home. An understanding of maternal dietary behaviors could assist in the promotion of healthy eating for both mother and child. OBJECTIVE: To investigate the independent contribution of socioeconomic position to nutrition knowledge and diet quality, and the contribution of nutrition knowledge to diet quality; and to assess nutrition knowledge as a mediator between socioeconomic position and diet quality. SUBJECTS/SETTING: Subjects included first-time Australian mothers residing in Melbourne, Australia (n=527). DESIGN: Cross-sectional data from the Melbourne InFANT (Infant Feeding, Activity, and Nutrition Trial) Program. METHODS: A self-completed validated food-frequency questionnaire recorded dietary intake during the past year and a diet quality score was developed. Maternal education was used to classify socioeconomic position. Regression analyses were undertaken to assess associations between socioeconomic position and nutrition knowledge score; socioeconomic position and diet score; and nutrition knowledge score and diet score. Baron and Kenny's approach to mediation analyses was used to assess nutrition knowledge as a mediator. RESULTS: Overall maternal diet quality was poor, with average diet quality scores of 52.4, 52.9, and 57.1 out of a possible 80, in the low, medium, and high socioeconomic groups, respectively. Maternal diet quality was significantly better in mothers of high socioeconomic position as compared with the low socioeconomic position group (P<0.001). Overall nutrition knowledge was found to be quite high, with mean nutrition knowledge scores of 12.5, 12.7, and 13.7 out of a possible 17, in the low, medium, and high socioeconomic groups, respectively. Maternal nutrition knowledge was found to partly mediate the association between socioeconomic position and maternal diet quality. CONCLUSIONS: Poor maternal dietary quality may have implications for both mother and child, and socioeconomic position and nutrition knowledge are likely to be important. Effective interventions to support mothers to achieve healthy diets for themselves and their families are needed.