Citations from Robert Ferguson’s “Teacher’s Guide: Research and Benefits of Chess.”

Christiaen, Johan (1976). “Chess and Cognitive Development,” doctoral dissertation, Trans. Stanley Epstein.

Ferguson, Robert (1994). “Teaching the Fourth R (Reflective Reasoning) through Chess,” doctoral dissertation.

Ferguson, Robert (1995, January 12-13). “Chess in Education Research Summary,” paper presented at the Chess in Education A Wise Move Conference at the Borough of Manhattan Community College.

Frank, Albert (1974) “Chess and Aptitudes,” doctoral dissertation, Trans. Stanley Epstein.

Liptrap,  James (1999). “Chess and Standardized Test Scores,” Chess Coach Newsletter, Spring 1999, Volume 11 (1), pp. 5 & 7.