We conducted large-scale lost letter experiments in Beijing, a megacity with more than 21 million residents, to test if the observed altruistic attribute of the letter recipient would induce more passersby to return the lost letters. The treatment letters were addressed to a nationally renowned...

We conducted a large-scale lost letter experiment with a novel design across all seasons in Beijing to study whether ambient air pollution influences helping behavior. We assessed air pollution by PM2.5 and PM10. Our novel design allowed us to collect real-time granular data from the streets. To...

We present findings from an evaluation study of the Dual-Teacher program, a computer- assisted instruction program, that makes lecture videos and other teaching resources from an elite urban middle school available through the internet to schools in poor and remote areas in China. The unique...

Data from nine transition economies in Central and Eastern Europe are used to examine the role of computer adoption for returns to education. As in western economies, computers are adopted most heavily by young, educated, English-speaking workers with the best access to local telecommunications...

Data from nine transition economies in Central and Eastern Europe are used to examine the role of computer adoption for returns to education. As in western economies, computers are adopted most heavily by young, educated, English-speaking workers with the best access to local telecommunications...

Data from nine transition economies in Central and Eastern Europe are used to examine the role of computer adoption for returns to education. As in western economies, computers are adopted most heavily by young, educated, English-speaking workers with the best access to local telecommunications...