Interracial workplace cooperation, or the Steve Nash paper

At least in the NBA, it is good, as reported by Price, Lefgren, and Tappen:

Using data from the National Basketball Association (NBA), we examine
whether patterns of workplace cooperation occur disproportionately
among workers of the same race. We find that, holding constant the
composition of teammates on the floor, basketball players are no more
likely to complete an assist to a player of the same race than a player
of a different race. Our confidence interval allows us to reject even
small amounts of same-race bias in passing patterns. Our findings
suggest that high levels of interracial cooperation can occur in a
setting where workers are operating in a highly visible setting with
strong incentives to behave efficiently.

Here is the paper, here are ungated copies.