Figure 2

Number of participants who selected the piece-rate or tournament payment scheme in Task 3 according to treatment and autism spectrum quotient (AQ) scores. We assigned participants whose AQ scores were higher and lower than the median into the AQ(H) and the AQ(L) group, respectively. Fifteen of the 56 AQ(L) participants in the oxytocin group and 21 of the 47 AQ(L) participants in the placebo group chose the tournament payment scheme (Fisher’s exact test with p values adjusted according to the Benjamini and Hochberg method, p = 0.39, Odd’s ratio = 0.45). Fifteen of the 40 AQ(H) participants in the oxytocin group and 13 of the 49 AQ(H) participants in the placebo group chose the tournament payment scheme (Fisher’s exact test with p-values adjusted according to the Benjamini and Hochberg method, p = 1.00, Odd’s ratio = 1.67).