“…The outcomes of PBL implementation have shown that it is an effective instructional pedagogy that inherently engages students in active, meaningful learning, resulting in deeper understanding and longer retention (Gallagher & Stepien, 1996;Hung, Bailey, & Jonassen, 2003;Norman & Schmidt, 1992). In examining the research on PBL, a majority of studies have focused on various implementation and learning outcome issues, such as the roles of tutors (Margetson, 1991;Wilkerson, & Hundert, 1991), students' perceptions (Caplow, Donaldson, Kardash, & Hosokawa, 1997;Woods, 1996), group size (Lohman & Finkelstein, 2000), group processing skills (Achilles & Hoover, 1996;Mayo, Donnelly, Nash, & Schwartz, 1993), and the rate of board exam passage (Albanese & Mitchell, 1993;Norman & Schmidt, 1992;Vernon & Blake, 1993). However, the issues surrounding the design of problems seem to have received little attention.…”