formation, and reproductive externalities. -- Altruism ; spite ; externalities ; conformity ; fixation ; signalling …

control experiment in which more than one thousand children attending grades 6-10 across 15 different schools and 5 school …Concerns over the perceived negative impacts of computers on social development among children are prevalent but … districts in California were randomly given computers to use at home. Children in the treatment group are more likely to report …

control experiment in which more than one thousand children attending grades 6-10 across 15 different schools and 5 school …Concerns over the perceived negative impacts of computers on social development among children are prevalent but … districts in California were randomly given computers to use at home. Children in the treatment group are more likely to report …

education program. We follow participants into late midlife as well as their children into adulthood. Impacts on the original … participants and their children generate substantial benefits. Access to life-cycle data enables us to evaluate the accuracy of …