Helpful kids are happy kids: Pitching in with household jobs builds confidence and gives children a sense of belonging, psychologists say. Sisters Angela, 12, Gelmy, 9, and Alexa Natali, 4, know this well. Since they were toddlers, their mom has encouraged them to help around their home in a village near Valladolid, Mexico. (Adriana Zehbrauskas for NPR)
