Marreiros, GoretiSantos, RicardoFreitas, Carlos FilipeRamos, CarlosNeves, JoséBulas-Cruz, José2013-06-112013-06-1120081975-4094http://hdl.handle.net/10400.22/1670Decision Making is one of the most important activities of the human being. Nowadays decisions imply to consider many different points of view, so decisions are commonly taken by formal or informal groups of persons. Groups exchange ideas or engage in a process of argumentation and counter-argumentation, negotiate, cooperate, collaborate or even discuss techniques and/or methodologies for problem solving. Group Decision Making is a social activity in which the discussion and results consider a combination of rational and emotional aspects. In this paper we will present a Smart Decision Room, LAID (Laboratory of Ambient Intelligence for Decision Making). In LAID environment it is provided the support to meeting room participants in the argumentation and decision making processes, combining rational and emotional aspects.engDecision makingSmart decision roomAmbient intelligencejournal article2013-05-2210.14257/ijsh.2008.2.2.05