To purchase the User's Manual (including 1998 national norms), copies of the instrument, the right to make copies of the instrument, or other JDI-related services, email, call, or mail the JDI office using the following information:

JDI Office
Bowling Green State University
Department of Psychology
Bowling Green, OH 43403
Phone: (419) 372-8247
Fax: (419) 372-6013
Email: jdi_ra@bgnet.bgsu.edu