This paper reviewed major GDSS literatures from the "groupthink" standpoint, proposed a new framework for GDSS research, and suggested research issues. Despite a sizable amount of GDSS research for a dacade, the results tend to lack consistency, and still more studies are needed in many areas. One way to overcome the limitations is the thorough review of GDSS literatures and "groupthink" theories. Especially, groupthink/decision-making literatures provide many useful insights and guidelines for further exploring new GDSS research areas.