We treat instructions as an experimental variable to study how their format affects the participants’ comprehension, speed of play, and experimental behavior. We find that, in a public good game, short on-screen instructions requiring forced inputs improve on subjects’ comprehension and...

Survey data show that subjects positively discount both gains and losses but discount gains more heavily than losses. This holds for monetary and non-monetary outcomes. These results do not confirm the findings of two earlier studies about negative time preferences for non-monetary outcomes.