Answer: “Found a substantial correlation between an essay test and a multiple-choice test.” JV Lombard. 1988. P. 215.
Comment: I imagine there is considerable research on this topic. I look forward to more results. RayS.
Title: “Annotated Bibliography of Research in the Teaching of English.” JD Marshall and RK Durst, Eds. Research in the Teaching of English (May 1990), 205-221.