Positive affect and pro-environmental behavior: A preregistered experiment

In recent years, correlational evidence has accumulated in support of a positive relationship between positive affect and pro-environmental behavior. In contrast, it remains unclear whether the induction of positive affect can causally promote pro-environmental behavior. Previous attempts to examine the effects of experimental affect induction were constrained by the difficulty to study pro-environmental behavior under controlled laboratory conditions. Here, we address this limitation by examining the effect of a validated affect-induction procedure on a recently validated laboratory measure of pro-environmental behavior. Participants in our preregistered experiment (N = 178) watched and rated video clips pretested to induce either positive or neutral affect before completing 24 trials on the Pro-Environmental Behavior Task (PEBT). Results did not reveal any evidence in support of a positive effect of positive affect on PEBT behavior. This result illustrates the need for further systematic and cumulative research on the complex relationship between affect and pro-environmental behavior.