I am trying to figure out why ResearchGate.net shows substantially fewer citations for a journal article than Google Scholar does. For example, for my publication, "Impact of the 2008-2010 Economic Recession on Local Health Departments", the Research Gate shows 66 citations and Google Scholar shows 94 (see https://scholar.google.com/citations?user=XFEt8ckAAAAJ&hl=en).
I am curious if others have similar experience and if Research Gate should standardize its protocol for crediting citations with sister sites such as Google scholar.