This study investigates the contributions of artificial intelligence to the development of decision support systems research subspecialties. Author cocitation analysis was applied to an author cocitation frequency matrix derived from a comprehensive database of the DSS literature (1970-1995) to uncover twelve clusters consisting of six major areas of DSS research (foundations, group DSS, model management, user interfaces, implementation, and multicriteria DSS) and six contributing disciplines (multiple criteria decision making, cognitive science, organization science, artificial intelligence, group decision making, and systems science). This study concludes that artificial intelligence has made important contributions to the development of foundational concepts, model management, group support systems, and multiple criteria decision support systems.