“…Examples of studies using the Eysenckian model of personality are provided, for example, by Francis and Rutledge (2000), Rutledge and Francis (2004), Francis, Louden, and Rutledge (2004), Francis, Turton, and Louden (2007), Turton and Francis (2007), Francis, Robbins, Rolph, Turton, and Rolph (2010), and Wulff (2013a, 2013b). Examples of studies using psychological type theory are provided by Francis, Wulff, and Robbins (2008), Francis, Robbins, Kaldor, and Castle (2009), Robbins and Francis (2010), Robbins (2011), Francis, Gubb, and, Robbins, Francis, and Powell (2012), Francis, Payne, and Robbins (2013) and Francis and Crea (2015).…”