Are there any studies that have compared the number of hours worked by faculty members who are teaching-focused vs. those at research intensive institutions?
I have the impression that faculty that balance teaching and research tend to work longer hours and on weekends more than faculty who do not have any research obligations. I don't know where I picked this idea up and I'm suspicious that it is biased and based more on opinion than fact.
Any studies/surveys out there to support / refute this idea?
I'm interested mainly in science departments in the USA.