Most models of ambiguity aversion satisfy Anscombe-Aumann's Monotonicity axiom. Monotonicity imposes separability of preferences across events that occur with unknown probability. We construct a test of Monotonicity by modifying the Allais paradox to a setting with both subjective and objective...

Infringement of intellectual property seems to be much more common than infringement of physical property. Intellectual property rights protect goods that are non-rival in consumption, while physical property rights protect rival goods. Non-rivalry implies that the owner suffers no direct harm...

The emergence of online labor markets makes it far easier to use individual human raters to evaluate materials for data collection and analysis in the social sciences. In this paper, we report the results of an experiment – conducted in an online labor market – that measured the...

Randomizing different schools of thought –via a month-long training– finds that training deputy ministers in effective altruism renders 0.4-0.6 standard deviations increase in altruism. Treated ministers increased mentalizing of others: blood donations doubled, but only when blood banks...

We find consistent evidence of negative autocorrelation in decision-making that is unrelated to the merits of the cases considered in three separate high-stakes field settings: refugee asylum court decisions, loan application reviews, and major league baseball umpire pitch calls. The evidence is...