Any readers expert in chess?

My friend John Doris, a philosopher at Washington University, St. Louis, is working on a new book on expertise, in which chess figures as an important example (there is apparently a large psychology literature on it), but he himself is not a serious chess player.  He writes:  "If any ELO-rated or titled chess players would be willing to chat with me for a few minutes in connection with my research on the development and assessment of expertise, I'd be delighted if they could send an email to jdoris@wustl.edu with 'chess' in the subject line."  John is in Princeton this year at the University Center for Human Values, if any of you chess experts are local!