Measuring the reliability of proxy respondents in behavioural assessments: an open question.

"Declarations Conflict of interestThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. Ethical approvalThe study was compliant with the declaration of Helsinki. This study was approved by the Institutional Review Board of Department of Educational Sciences, Psychology, Communication, University of Bari n. ET-21-01. Informed consentInformed consent and participant responses to the questionnaires were obtained simultaneously from all participants. Conflict of interest The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article."

"Funding Open access funding provided by Università degli Studi di Bari Aldo Moro within the CRUI-CARE Agreement. The first author is supported by the project “A-WAND! Strengthening the skills of self-monitoring and preventing the risk of accidents in and outdoors in a population of elderly people in the south of Italy”. Action Founded by Research for Innovation (REFIN)-POR Puglia FESR FSE 2014–2020–Asse X–Azione 10.4. (Grant Code 8C40CDAA), and by the project AMA–Apulia Mindful Aging. Action Founded by AReSS Puglia."