“…This study adopts the Lerner index because among its contemporaries, it is one of the most efficient competition measures following the outcome of the correlation of all indicators by Liu et al (2013). In addition, the index allows for short term estimation and so can be used to compute competition of the banking market at any point in time, (Agoraki et al, 2011;Amidu, 2013;Ariss, 2010;Berger et al, 2009;Fu et al, 2014;Kouki and Al-Nasser, 2014). Finally, it is theoretically sound because it helps to locate the degree of competition between perfect competition and monopoly (Berger et al, 2009;Rojas, 2011).…”