“…Nature found that just under half of the more than 3,500 scientists and engineers they surveyed visit ResearchGate regularly (Van Noorden, 2014), while a recent survey of over 20,000 respondents by researchers at Utrecht University Library found that 61% who have published at least one paper use ResearchGate Matthews, 2016). Other measures of the proportion of researchers using ResearchGate range from 15% to 65% depending on the population studied (Campos & Valencia, 2015;Haustein et al, 2014;Laakso et al, 2017;Lupton, 2014;Madhusudhan, 2012;Mahajan, Singh, & Kumar, 2013;Meishar-Tal & Pieterse, 2017;Míguez-González, Puentes-Rivera, & Dafonte-Gómez, 2017;Mikki et al, 2015;Ortega, 2015;Singh, 2016;Tran & Lyon, 2017).A number of studies have reported that ResearchGate is relatively more popular among researchers in the sciences when compared with the academic social network Academia. edu, which is preferred by researchers in the social sciences and especially the humanities Campos-Freire & Rúas-Araújo, 2016;Elsayed, 2015;Jamali et al, 2016;Matthews, 2016;Mikki et al, 2015;Nández & Borrego, 2013;Ortega, 2015;Thelwall & Kousha, 2015;Thelwall & Kousha, 2017;Van Noorden, 2014 Míguez-González et al, 2017;Mikki et al, 2015;Ortega, 2015;Singh, 2016;Tran & Lyon, 2017;Van Noorden, 2014).…”