Kouchaki, M., &Smith, I. H. (2014). The morning morality effect: The influence of time of day on unethical behavior. Psychological science, 25(1), 95-102.
Are people more moral in the morning than in the afternoon? We propose that the normal, unremarkable experiences associated with everyday living can deplete one’s capacity to resist moral temptations. In a series of four experiments, both undergraduate students and a sample of U.S. adults engaged in less unethical behavior (e.g., less lying and cheating) on tasks performed in the morning than on the same ...