“…In 2013, nearly 1800 mixed methods studies were published, this is a huge jump compared to nearly 20 articles per year in the '90s. This dramatic increase has been "professionally legitimatized" by textbooks and journals that are mainly concerned with mixed research (Biddle & Schafft, 2015;Molina-Azorin, 2016) such like "Journal of Mixed Methods Research". Moreover, the mixed research approach is spreading in many research disciplines including for example business research, psychology, sociology (Molina-Azorin, 2016), international relations (Pratt, 2016), educational research (Johnson & Christensen, 2012), library and information sciences research (Ma, 2012), information system research (Goldkuhl, 2008(Goldkuhl, , 2012, and health service research (Glogowska, 2011;Sale et al, 2002).…”