You're right software engineering literature is not as strong as, say, physics -- where you can relatively easily strip out confounding factors. Or medicine, where you can get funding for very large samples. We have to work with the limits of the subject and the research funding.
However it seems that there is a growing body of supporting literature coming from other fields that open-plan is usually a decision with unseen costs. The linked article is an example.
However it seems that there is a growing body of supporting literature coming from other fields that open-plan is usually a decision with unseen costs. The linked article is an example.