Dr. Brooke Linden at Queen's University (Brooke Linden) is exploring exactly this question and has a tool for measurement. You may wish to explore her work.
My own work, about the get started early in the new year, explores how we might adapt instructional design and pedagogical development to mitigate stressors students experience on their academic journey (Data Minding Their Minds - Evolution of a Research Methodology - RG.pdf