COVID As a Catalyst: A Qualitative Study Of Professional Identity Formation among U.S. Medical Students During COVID-19.

PHENOMENON: Students become physicians not only by mastering medical knowledge, but also through a process of Professional Identity Formation (PIF). In this study, we used the conceptual framework of Jarvis-Selinger et al. to explore the impact of COVID, as a major public health crisis, on the PIF of preclinical medical students in our country. APPROACH: At two U.S. medical schools, we interviewed 28 medical students twice as they moved from first to second year during the 2020-2021 COVID pandemic and explored the impact of COVID-19 on PIF. We coded the transcribed interviews and identified themes using constructivist thematic analysis. FINDINGS: We identified three themes: 1) mental health and wellness impacts; 2) inhabiting identity as a health professional during COVID; and 3) questioning the role of physicians in society. Routines and support systems were disrupted, undermining wellness and confidence in professional choices. Students noted the need to be public health role models, and COVID prompted feelings of pride, while also causing them to question expectations of self-sacrifice amid a new politicization of medicine. Students felt that physicians must be increasingly engaged in public health and political communication. INSIGHTS: Our findings inform medical educators seeking to build a scaffolding to support PIF during a public health crisis, and highlight the importance of current events and politics on PIF. Our recommendations include the need for student support, longitudinal mentorship, curricular space to discuss the impact of sociopolitical factors on PIF, and revisiting foundational concepts such as professionalism to take into account the social and political context. Our findings add to understanding of PIF during the COVID pandemic, but are also relevant to teaching and learning during future public health crises.

Mix it and fix it: functions of composite olfactory signals in ring-tailed lemurs.

Animals communicating via scent often deposit composite signals that incorporate odorants from multiple sources; however, the function of mixing chemical signals remains understudied. We tested both a 'multiple-messages' and a 'fixative' hypothesis of composite olfactory signalling, which, respectively, posit that mixing scents functions to increase information content or prolong signal longevity. Our subjects-adult, male ring-tailed lemurs (Lemur catta)-have a complex scent-marking repertoire, involving volatile antebrachial (A) secretions, deposited pure or after being mixed with a squalene-rich paste exuded from brachial (B) glands. Using behavioural bioassays, we examined recipient responses to odorants collected from conspecific strangers. We concurrently presented pure A, pure B and mixed A + B secretions, in fresh or decayed conditions. Lemurs preferentially responded to mixed over pure secretions, their interest increasing and shifting over time, from sniffing and countermarking fresh mixtures, to licking and countermarking decayed mixtures. Substituting synthetic squalene (S)-a well-known fixative-for B secretions did not replicate prior results: B secretions, which contain additional chemicals that probably encode salient information, were preferred over pure S. Whereas support for the 'multiple-messages' hypothesis underscores the unique contribution from each of an animal's various secretions, support for the 'fixative' hypothesis highlights the synergistic benefits of composite signals.