Last updated on 07/16/2014
Treadway MT, Buckholtz JW, Schwartzman AN, Lambert WE, Zald DH. Worth the 'EEfRT'? The effort expenditure for rewards task as an objective measure of motivation and anhedonia. PLoS ONE. 2009;4 :e6598.
The roots of modern justice: cognitive and neural foundations of social norms and their enforcement.