General DiscussionWe investigate the role that ambient temperature plays in affecting WTP in different selling contexts—such as in auc- tions, negotiations, and fixed-price settings. We find that higher (vs. moderate) temperatures increase WTP in auc- tions but lower WTP in negotiations. This occurs because of temperature-induced subjective feelings of hostile aggres- sion. We also provide nuanced support for our process by demonstrating why temperature incites aggression—the root cause is discomfort.We report findings from six studies. In Study 1, using a real auction and with multiple products, we provide support for the core effect: higher (vs. moderate) temperature elicits higher WTP. In Study 2a, we also include negotiations and fixed- price settings. As expected, higher (vs. moderate) temperatures lead to an increase in WTP in auctions but a decrease in WTP in negotiations. Temperature does not affect intentions in fixed- price contexts. In Study 2b, we replicate our effects using mul- tiple temperatures, including a lower (63F) temperature. If temperature-induced discomfort is responsible for higher aggression, then uncomfortable lower temperatures should also