Ah, okay I'm trying to understand your recommendation. Is it because not every tip has a research finding tied to it, which seems incongruous with the title? Or is it that the research finding doesn't explicitly tie to the recommendation?
Most of the tips do reference research findings, and you can find the reference by clicking on the subscript numbers or scroll down to the references section.
Some tips are more common sense and/or geared towards addressing a research finding. In the "arm's length" tip for example, the referenced paper discusses the importance of eye contact in computer mediated communications but doesn't explicitly say you should keep an arm's length to achieve the best eye contact. Was your expectation that the tip should link to research determining the optimal distance from the camera to achieve good eye contact?
