Full Terms & Conditions of access and use can be found at https://www.tandfonline.com/action/journalInformation?journalCode=cjid20 Journal of Intellectual & Developmental Disability ISSN: 1366-8250 (Print) 1469-9532 (Online) Journal homepage: https://www.tandfonline.com/loi/cjid20 Impact of severe intellectual disability on proxy instrumental assessment of quality of life Marco O. Bertelli, Annamaria Bianco, Andrea Rossi, Michele Mancini, Giampaolo La Malfa & Ivan Brown To cite this article: Marco O. Bertelli, Annamaria Bianco, Andrea Rossi, Michele Mancini, Giampaolo La Malfa & Ivan Brown (2019) Impact of severe intellectual disability on proxy instrumental assessment of quality of life, Journal of Intellectual & Developmental Disability, 44:3, 272-281, DOI: 10.3109/13668250.2017.1350835 To link to this article: https://doi.org/10.3109/13668250.2017.1350835 Published online: 13 Nov 2017. Submit your article to this journal Article views: 75 View related articles View Crossmark data