In socioeconomic systems, where actors are motivated by different objectives, interests and priorities, it is very difficult to meet all involved party expectations when proposing new solutions. Argumentative approaches have been proposed and demonstrated to be of added value when addressing such decision making problems. In this paper we focus on the following research question: "How to define an attack relation for argumentative decision making in socioeconomic systems?" To address this question we propose three kinds of attacks that could be defined in the context of a precise application (packaging selection) and see how the non computer science experts evaluate, against a given set of decision tasks, each of these attacks.