“…The research on cognitive effort seems to regard an emotional (i.e., intrinsic) reward, such as boosting self-esteem or feeling good about oneself, somewhat lightly as compared to biological (e.g., foods), cognitive (e.g., a correct answer), social (e.g., approval), and other types (e.g., monetary) of reward ( Donovan, Hafsteinsson, & Lorenzet, 2018 ; Lallement et al, 2014 ; Kurzban, Duckworth, Kable, & Myers, 2013 ; Milyavskaya, Inzlicht, Johnson, & Larson, 2018 ; Schouppe, Demanet, Boehler, Ridderinkhof, & Notebaert, 2014 ). In addition, cognitive effort is generally regarded as a manifestation of human executive function or general intelligence, so it has often been measured in the context of productive or improved performance ( Kurzban et al, 2013 ).…”