Main effect of OT infusion on percent donated after viewing a PSA.

Participants who received OT donated money to 33% of ads for which they correctly answered the content question, while those on placebo donated to 21% of eligible ads ( = 10.835, p = .001). The bar represents one standard error. There was no difference between groups in the proportion of correct answers to a question about the ad's content (OT: 93.8%, placebo: 90.1%;  = 2.891, p = .091)