Do workers vary in their ability to work with others? I compare a given worker's productivity in solitary production to their value-added to team production to identify team skills: a worker's contribution to team production above and beyond that given by general skills. The identifying...

In recent years there has been a plethora of empirical papers by economists concerning the effects of academic rank in school or college on subsequent outcomes of students. We review this recent literature, describing the difficult identification and measurement issues, the assumptions and...

Teamwork is growing in developed economies, and workers in teams are increasingly compensated according to team output. Because parsing individual contributions to teamwork is difficult, I focus on scholarly economics research, which lists contributing authors. I use turnover to identify team...

Emigrants from Italy and Ireland contributed disproportionately to the Age of Mass Migration. That their departure improved the living standards of those they left behind is hardly in doubt. Nevertheless, a voluminous literature on the selectivity of migrant flows - both from sending and...