Figure S1.Distribution of children's age.; Table S1. Model output for children's engagement; Table S2. Model output for children's sharing; Table S3. Model output for children's social inclusion from The influence of cooperation and competition on Preschoolers' prosociality toward in-group and out-group members

Dashed line indicates the mean (M = 4.96 years). ;(1) not indicated because of having limited interpretation (2) dummy coded with Competition being the reference category (3) dummy coded with Gaming phase 1 being the reference category (4) z-transformed to a mean of 0 and a standard deviation of 1 (5) dummy coded with male being the reference category ;(1) dummy coded with Competition being the reference category (2) z-transformed to a mean of 0 and a standard deviation of 1 (3) dummy coded with in-group being the reference category (4) dummy coded with Gaming phase 1 being the reference category (5) dummy coded with male being the reference category (6) dummy coded with in-group being the reference category ;(1) dummy coded with Competition being the reference category (2) z-transformed to a mean of 0 and a standard deviation of 1 (3) dummy coded with Gaming phase 1 being the reference category (4) dummy coded with male being the reference category (5) dummy coded with left being the reference category