“…Out of the 24 studies reporting P3 feedback effects for gains and losses, 19 studies reported larger P3 amplitudes for gains compared to losses (Wu and Zhou, 2009 ; Leng and Zhou, 2010 , 2014 ; Polezzi et al, 2010 ; Rigoni et al, 2010 ; Ma et al, 2011 ; Nelson et al, 2011 ; Ibanez et al, 2012 ; Luo and Qu, 2013 ; Yang et al, 2013 , 2015 ; Zhang et al, 2013 , 2014 ; Mushtaq et al, 2015 ; Zheng and Liu, 2015 ; Zhu et al, 2015 , 2017 ; Kardos et al, 2016 ; Zhao et al, 2016 ). Two studies did not find amplitude differences between gain and loss outcomes (Santesso et al, 2011 ; Telpaz and Yechiam, 2014 ), and three studies reported the opposite findings (Schuermann et al, 2012 ; Zheng et al, 2015 ; Endrass et al, 2016 ).…”