RT Journal Article SR Electronic T1 Are patients accurate forecasters of their emotional response to medical conditions? A scoping review on affective forecasting JF BMJ Open JO BMJ Open FD British Medical Journal Publishing Group SP e053370 DO 10.1136/bmjopen-2021-053370 VO 11 IS 12 A1 Bosch, G J van den A1 Roos, R A N A1 Otten, R A1 Bockting, Claudi A1 Smulders, Y M YR 2021 UL http://bmjopen.bmj.com/content/11/12/e053370.abstract AB Objective In this paper, we challenge the premise that patients are capable of accurately predicting their emotional response or quality of life in anticipation of health changes. Our goal was to systematically review the published empirical evidence related to the reliability of affective forecasting in the context of medical conditions.Design Scoping review.Setting We conducted a search string using both simple search terms as well as MeSH terms and searched the electronic databases of PubMed, Embase, CINAHL and Cochrane up to April 2021.Participants We initially selected 5726 articles. Empirical studies reporting on predicted and/or observed emotions or quality of life concerning deterioration, improvement in health or chronic illnesses were included. Furthermore, empirical studies of healthy individuals predicting emotional response or quality of life compared with patients reflecting on emotions or quality of life concerning deterioration or improvement in health or chronic illnesses were also included. Studies on healthy participants, psychiatric patients and non-English articles were excluded.Results 7 articles were included in this review. We found that patients generally tend to systematically exaggerate both anticipated happiness and sorrow/grief after health improvement and deterioration, respectively.Conclusion Patients are less adept in predicting emotional response or quality of life regarding to health changes than we are inclined to assume. We discuss several biases which could explain this phenomenon. Our findings are relevant in the context of treatment decisions, advanced care planning and advanced care directives.Data are available on reasonable request. The datasets used and analysed during the current study are available from the corresponding author on reasonable request.