OBJECTIVE: To identify the prevalence and severity of impostor phenomenon and burnout in newly licensed registered nurses, map the current literature on impostor phenomenon in nursing, and identify related factors affecting the new nurse\'s transition to practice.
BACKGROUND: Impostor phenomenon is an internalised intellectual phoniness resulting in persistent self-doubt despite prior success. It can evoke feelings of emotional exhaustion associated with burnout, negatively affecting employee retention. Due to changes in nursing education resulting from COVID-19, self-doubt and uncertainty among new nurses are expected to be heightened, leading to burnout which adversely effects nurse well-being, patient care and retention.
METHODS: The scoping review follows the methodological framework developed by Arksey and O\'Malley (2005) and the Reporting Checklist for Scoping Reviews (PRISMA-ScR) guidelines.
METHODS: The literature search was conducted utilising PubMed, CINAHL and PsycINFO. Inclusion criteria were studies published between 2011 and 2021, written in English, peer-reviewed, and focused on newly licensed registered nurses. Eighteen articles were reviewed.
RESULTS: Studies on impostor phenomenon in nursing are limited to nursing students and clinical nurse specialists. Prevalence of impostor feelings in these populations range from 36% to 75%, and 12.3% to 46% of new nurses report burnout. Impostor feelings arise from role ambiguity, lack of self-compassion, transitions, and minimal clinical experience. Burnout was associated with stress, feeling unprepared, inadequate socialisation, and lack of self-compassion. Overlap in these factors could increase impostor feelings and burnout in new nurses.
CONCLUSIONS: Effects of impostor phenomenon and burnout can negatively impact the well-being of the new nurse. Currently, no studies simultaneously examine impostor phenomenon and burnout in new nurses. Further research on the relationship between these phenomena should be conducted.
CONCLUSIONS: Understanding the impact of impostor phenomenon and burnout on new nurses could help mitigate challenges they face transitioning into practice.

The impostor phenomenon is a pervasive psychological experience of perceived intellectual and professional fraudulence. It is not a diagnosable condition yet observed in clinical and normal populations. Increasingly, impostorism research has expanded beyond clinical and into applied settings. However, to date, a systematic review examining the methodological quality of impostorism measures used to conduct such research has yet to be carried out. This systematic review examines trait impostor phenomenon measures and evaluates their psychometric properties against a quality assessment framework. Systematic searches were carried out on six electronic databases, seeking original empirical studies examining the conceptualization, development, or validation of self-report impostor phenomenon scales. A subsequent review of reference lists also included two full-text dissertations. Predetermined inclusion and exclusion criteria were specified to select the final 18 studies in the review sample. Of the studies included, four measures of the impostor phenomenon were identified and their psychometric properties assessed against the quality appraisal tool-Clance Impostor Phenomenon Scale, Harvey Impostor Scale, Perceived Fraudulence Scale, and Leary Impostor Scale. The findings often highlighted that studies did not necessarily report poor psychometric properties; rather an absence of data and stringent assessment criteria resulted in lower methodological ratings. Recommendations for future research are made to address the conceptual clarification of the construct\'s dimensionality, to improve future study quality and to enable better discrimination between measures.