Funding for this research was provided by:
John D. and Catherine T. MacArthur Foundation (Research Network on Connected Learning)
MENTOR: The National Mentoring Partnership (n/a)
Text and Data Mining valid from 2019-01-19
Received: 8 October 2018
Accepted: 5 January 2019
First Online: 19 January 2019
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.
: All research reported on in the manuscript was conducted in compliance with APA ethical principles. The study consisted of secondary analyses of de-identified data, and therefore did not require formal consent or ethics board approval.