Joshua Greene,[assistant professor of psychology in the Faculty of Arts and Sciences ]along with a graduate student in psychology ,Joe Paxton at Harvard University issued a study on cognitive processes tangled with honesty published in Proceeding Of The National Academy funded by John D, Catherine T, MacArthur Foundation, the National Science Foundation, and the Athinoula A. Martinos Center for Biomedical Imaging.Here neuroimaging was used to view the individuals brain's activity, when acting honestly and dishonestly. The result showed that dorsolateral prefrontal cortex and the anterior cingulate cortex which are the control related regions of brain functioned efficaciously in dishonest person whereas honest person's brain activity was evaluated to null. The above study was conducted to evaluate the "Will Theory", that states honesty is the outcome of effective combat against temptation and "Grace Theory", where honesty is said to be present in people who lack temptation.After various experiments being conducted and results being obtained the above research favors Grace theory .

Greene says "Being honest is not so much a matter of exercising willpower as it is being disposed to behave honestly in a more effortless kind of way and this may not be true for all situations, but it seems to be true for at least this situation." He also says that if more amount of exercise is done in the above field then one can easily predict whether a person speaks truth or lies by observing his/her brain activity.