Investigate the prevalence and contextualize the relationship of impostor phenomenon (IP) and ambiguity tolerance (AT) in practicing physical therapists (PTs).
Online survey including demographic questions, Clance Impostor Phenomenon Scale (CIPS), and Tolerance of Ambiguity Scale (TAS).  Descriptive analyses assessed (N = 422) demographic data, CIPS, and TAS scores. Chi-square tests determined distribution across demographic variables.  Kruskal-Wallis tests assessed differences between CIPS and TAS.  Age was a proxy for career stage in Pearson product-moment correlations to assess relationships between CIPS and TAS.
In practicing PTs (M age = 42.12, SD = 12.34), moderate (48.6%; n = 205) to frequent (26.8%; n = 113) IP feelings were prevalent, but only 31.5% (n = 133) were true impostors.  Significant differences exist in clinical experience for CIPS, H(7, n = 422) = 67.82, p <.001 and TAS, H(7, n = 422) = 21.79, p= .003. Most PTs tolerate ambiguity (M = 54.93, SD = 8.19).  A moderate negative correlation between age and CIPS, r = -.36, p <.001 and a small negative correlation between age and TAS, r=-.19, p <.001 exists. Age accounts for 13% of the variance per IP and 3.6% variance per TAS score.  A small positive relationship exists between CIPS and TAS, r = .10, p <.05.
Practicing PTs experience moderate to frequent IP and are ambiguity tolerant.  Clinical experience is inversely related to IP and AT.  Almost half of early-career PTs feel like impostors, which can lead to decreased job satisfaction, burnout, psychological distress, feelings of self-doubt, and depression.

Aging veterans often suffer from increased vulnerability, manifested among other things in old subjective age and poor perceived health. Though research has documented the contribution of trauma related variables to these negative appraisals, their associations with impostorism (i.e., the subjective experience that one is less adequate than others perceive) remain unexamined.
Filling this gap, this study explored the relations between impostorism and subjective age and perceived health among aging combat veterans.
The study was conducted among 146 Israeli veterans of the 1973 Yom Kippur War. Participants were assessed for combat exposure, Posttraumatic Stress Disorder (PTSD) symptoms, and health-related behaviors during middle adulthood (1991; T1), and for subjective age, perceived health, impostorism, PTSD symptoms, and depressive symptoms during old age (2018; T2).
The veterans\' impostorism was associated with relatively old subjective age and poor perceived health, above and beyond the effects of age, health-related behaviors, combat exposure, depressive symptoms, and PTSD symptoms.
The current results suggest that impostorism may contribute to veterans\' stress and negatively affect their evaluations regarding age and health.

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.

Objectives: The aging process may be affected by negative life events as well as social factors. Though psychological aspects of the aging process in veterans have been the focus of considerable research, decorated veterans have been scarcely investigated in this domain. The current study sought to assess psychiatric distress (PD) levels among aging decorated and non-decorated veterans\' (DVs and n-DVs, respectively) and examine its association with the maladaptive perception that others will identify a high-achieving person as an impostor (i.e. impostorism) and perceived social isolation (i.e. loneliness).Methods: Two groups of Israeli veterans of the 1973 Yom Kippur War, DVs (n = 75) and n-DVs (n = 73), were assessed for PD and combat exposure in middle adulthood (1991; T1); in later life (2018; T2) they were assessed for negative life events, impostorism, loneliness and PD.Results: Impostorism, loneliness and PD were all inter-correlated. DVs evinced less PD at T1 and T2 than n-DVs but similar levels of impostorism and loneliness at T2. Nevertheless, negative life events, impostorism and loneliness explained PD at T2, with loneliness being more significant, especially among the n-DVs. Combat exposure did not explain variances in late-life PD.Conclusion: Aging DVs seem to be less vulnerable to late-life PD than n-DVs, and impostorism and loneliness may be important factors in this respect. Being the first study to investigate aging DVs\' mental health and impostorism among aging veterans, the findings further underscore the clinical imperative of psychosocial factors in understanding aging veterans\' mental health.