We demonstrate that people discount delayed task outcomes due to perceived changes over time in supplies of slack. Slack is the perceived surplus of a given resource available to complete a focal task. For temporally near events, investing a resource for one purpose may cause one to fail to...

We explore the signal value of emotion and reason in human cooperation. Across four experiments utilizing dyadic prisoner dilemma games, we establish three central results. First, individuals believe that a reliance on emotion signals that one will cooperate more so than a reliance on reason....

Charity could do the most good if every dollar donated went to causes that produced the greatest welfare gains. In line with this proposition, the “Effective Altruism” movement seeks to provide individuals with information regarding the effectiveness of charities in hopes that they will...