Objectives: The aims of this review, focused on medical students, residents, and physicians, were a) to determine the levels of perfectionism and prevalence of impostor phenomenon, b) to assess the relationship between perfectionism, impostor phenomenon, and mental health, and c) explore how medical culture may influence these personality characteristics. Methods: A narrative literature review was conducted. Search terms were entered into PubMed, PsychINFO, Web of Science, EMBASE, and Google Scholar without date or geographic restrictions. The McMaster Critical Review Forms for Quantitative and Qualitative Studies were used for article appraisal. Final decisions on inclusion and exclusion were reached through discussion. Sixteen articles were included in this review and summarized in a data extraction table. Results: Medical students had similar perfectionism scores to other student groups but scored lower in maladaptive perfectionism. The overall prevalence of the impostor phenomenon ranged from 22.5% to 46.6%. More females (41%-52%) experienced clinical levels of impostor phenomenon compared to males (23.7%-48%). Most studies did not find an association between the impostor phenomenon and academic year of training. Both personality characteristics were associated with negative mental health effects. Medical culture can train for and/or exacerbate these characteristics, affecting professional identity formation. Both characteristics contribute to distress for learners during commonlyused teaching methods in medical education. Conclusions: Comprehensive changes in medical education that consider the relationship between medical culture, professional identity formation, impostor phenomenon, and perfectionism are needed. Longitudinal studies will help identify the implications of these findings for professional identity formation and medical education.

Teams including members from both inside and outside the organization being studied make valuable contributions. A team configuration including both insiders and outsiders is highly effective because variations in the experience history of researchers on the team broaden the available perspectives and maximize the potential interpretations of observed behaviors. An insider-outsider research team consisting of university faculty and nurses at two psychiatric hospitals conducted a study, Meanings of State Hospital Nursing. This article summarizes the study, discusses issues to be resolved when using an insider-outsider research team, and presents the ways in which this approach enhanced the trustworthiness of our findings.

Work on interventions to deal with well-established wellbeing problems for patients and carers is now a research priority. Explicit use of current methods for patient and public involvement and for design and testing of interventions provide a toolkit for this research. Observational research is needed in other groups. There is a potential in considering needs across patients' social networks rather than looking individually at particular groups.

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