The costs and benefits of kindness for kids

What do children think makes an act kind? Which kind acts are children likely to perform? Previous research with adults suggests that the kindness of acts depends largely on the benefit provided and to a lesser extent on the cost incurred, and that adults are more likely to perform low-cost, high-benefit kind acts. In the current study, children (9-12 years, n = 945) and teens (13-17 years, n = 939) rated the benefit, cost, kindness, and likelihood of performing 173 acts of kindness, and adults (18+ years, n = 891) rated how beneficial, costly, kind, and likely the acts would be for young people to perform. Among children and teens, benefit but not cost predicted the kindness of acts, and benefit positively predicted, but cost negatively predicted, performance (for "kindness quotients" of 61% and 65%, respectively). Among adults, benefit and cost predicted the kindness of acts, and cost, but not benefit, negatively predicted performance (for a kindness quotient of 59%). The results for children and teens are similar to those from previous research with adults; however, adults are more sensitive to cost when rating kindness, are less sensitive to benefit when rating performance by young people, and are less likely to think young people will perform acts of kindness overall. In practical terms, the results suggest that recommending cost-effective acts may be the best way to encourage children to be kinder.