Trust pervades human societies 1 , 2 . Trust is indispensable in friendship, love, families and
organizations, and plays a key role in economic exchange and politics 3 . In the absence of …

Why does trust vary so substantially across countries? This paper presents a general
equilibrium growth model in which heterogeneous agents transact and face a moral hazard …

Editor’s Note: The man behind the discovery of the behavioral effect of a neurochemical in
the brain called oxytocin wondered if the molecule might motivate people to engage in …

This is the first report that endogenous oxytocin in humans is related to social behaviors,
which is consistent with a large animal literature. Subjects are put into a social dilemma in …

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We have previously shown that interpersonal trust substantially impacts economic growth,
and that sufficient interpersonal trust is necessary for economic development. To investigate …

Human beings routinely help strangers at costs to themselves. Sometimes the help offered
is generous—offering more than the other expects. The proximate mechanisms supporting …

It is quiet and dark. The theater is hushed. James Bond skirts along the edge of a building
as his enemy takes aim. Here in the audience, heart rates increase and palms sweat. I know …

Empathy is related to a variety of prosocial behaviors, but the brain mechanisms producing
the experience of empathy have not been fully characterized. This study investigated whether …

Human beings exhibit substantial interpersonal trust—even with strangers. The neuroactive
hormone oxytocin facilitates social recognition in animals, and we examine if oxytocin is …