Groups affect cheating in a variety of ways. While it is typically assumed that third party scrutiny decreases cheating, there scarce evidence as to whether members team cheat more or less if their individual actions are disclosed peers. To fill this gap, we run lab-in-the-field experiment with boy and girl scouts during summer camps. Scout troops organized into patrols: these naturally occurri...

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We experimentally investigate the difference in competitiveness of 3–5 year-old boys and girls in the U.S. 123 children from a preschool are randomly matched into girl–girl, boy–boy, and boy–girl pairs of similar age and participate in a gender-neutral, competitive classroom activity using candy as an incentive. Children participate in a piece rate incentive scheme and a tournament incentive sc...

OBJECTIVE Sex-ratio at birth in families with previous girls is worse than those with a boy. Our aim was to prospectively study in a large maternal and child unit sex-ratio against previous birth sex and use of traditional medicines for sex selection. MAIN OUTCOME MEASURES Sex-ratio among mothers in families with a previous girl and in those with a previous boy, prevalence of indigenous medic...