The ability of animals to adjust their behaviour according to seasonal changes in their ecology is crucial for their fitness. Eusocial insects display strong collective behavioural seasonality, yet the mechanisms underlying such changes are poorly understood. We show that nest preference by emigrating Temnothorax albipennis ant colonies is influenced by a season-specific modulatory pheromone that may help tune decision-making according to seasonal constraints. The modulatory pheromone triggers aversion towards low-quality nests and enhances colony cohesion in summer and autumn, but not after overwintering-in agreement with reports that field colonies split in spring and reunite in summer. Interestingly, we show that the pheromone acts by downgrading the perceived value of marked nests by informed and naive individuals. This contrasts with theories of collective intelligence, stating that accurate collective decision-making requires independent evaluation of options by individuals. The violation of independence highlighted here was accordingly shown to increase error rate during emigrations. However, this is counterbalanced by enhanced cohesion and the transmission of valuable information through the colony. Our results support recent claims that optimal decisions are not necessarily those that maximize accuracy. Other criteria-such as cohesion or reward rate-may be more relevant in animal decision-making.

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Research about social workers' impact during disasters is not widely recognized. Among the various roles social workers play during disasters are to handle a surge of clients and to support peers and leaders in their respective departments by filling in gaps in services. Dissemination of social workers' best practice approaches during actual disasters is important because their collective contributions facilitate their own resilience and improve their ability to care for their clients, which could inform other fields in the helping professions as well. Qualitative findings from (N = 8) US Department of Veterans Affairs social workers and social work leaders across the nation in regions that experienced hurricanes during 2017 and 2018 suggested the following best practices during disasters: 1) adapting new roles; 2) collaboration and organizational support; and 3) practicing self-care. Findings suggest the need to enhance content in social work education and training with the knowledge and skills pertaining to providing services in disaster settings. During disasters, it is important for social workers to both collaborate with their team and to practice self-care in order to be most effective for their clients.

Background Older adults are particularly at risk for severe illness or death from COVID-19. Accordingly, the Veterans Health Administration (VA) has prioritized this population group in its COVID-19 vaccination strategy. This study examines the receptivity of Veterans enrolled in the VA’s Geriatric Patient Aligned Care Team (GeriPACT) to receiving the COVID-19 vaccine. GeriPACT is an outpatient primary care program that utilizes multi-disciplinary teams to provide health services to older Veterans. Methods We conducted semistructured interviews with 42 GeriPACT-enrolled Veterans from five states. Participants were asked to identify barriers to vaccine acceptance. We gathered data from January-March 2021 and analyzed them using qualitative methods. Results Both White and African American GeriPACT Veterans had minimal vaccine hesitancy towards the COVID-19 vaccine. On-line registration and ineligibility of a spouse/caregiver for vaccination were primary barriers to early vaccination. Conclusions As the first wave of early adopters of the COVID-19 vaccination effort nears completion, targeted strategies are needed to understand and respond to vaccine hesitancy to lower the risk of subsequent waves of infections. The 2021 SAVE LIVES Act, begins to address identified vaccination barriers by permitting vaccination of Veteran spouses and caregivers, but consideration must be given to creating alternatives to on-line registration and allowing spouses and caregivers to register for appointments together.