Research links for consultants:

Boylan, Bliss, &Bonham: Program Components and Their Relationship to Student Performance http://www.ncde.appstate.edu/reserve_reading/program_components.html

Kerstiens: A Taxonomy of Learning Support Services. http://www.pvc.maricopa.edu/~lsche/proceedings/945_proc/945proc_kerstiens.htm

McKeachie: Helping students to learn how to learn. http://www.pvc.maricopa.edu/~lsche/proceedings/967_proc/967proc_mckeachie.htm

Smith: Learning styles: A force in effective teaching. http://www.pvc.maricopa.edu/~lsche/proceedings/967_proc/967proc_smith.htm

Topping:The effectiveness of peer tutoring in further and higher education: A typology and review of the literature http://www.springerlink.com/content/n724l17269g79xkj/fulltext.pdf