There are a bunch of studies that have tried to figure that out, specifically regarding software development.
The results are highly controversial though. I wrote an article about it a while back. The article references what they measured and has links to some of those studies at the bottom: codingblocks.net/practice/four-rea...
For the most part, these studies looked at how programmers solved the same problems in isolation and the results are still highly controversial. As for pulling metrics from actual "real world" work where people are working on different problems, and have different specialties, and different responsibilities...well, good luck! :)
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There are a bunch of studies that have tried to figure that out, specifically regarding software development.
The results are highly controversial though. I wrote an article about it a while back. The article references what they measured and has links to some of those studies at the bottom:
codingblocks.net/practice/four-rea...
For the most part, these studies looked at how programmers solved the same problems in isolation and the results are still highly controversial. As for pulling metrics from actual "real world" work where people are working on different problems, and have different specialties, and different responsibilities...well, good luck! :)