Abstract EN:

We focus on the social processes (group decision making) that construct an emergent attitude about field margins, in France western countryside. Negotiation theories are used to understand what occurs in three agri-environmental meetings. Descriptive and evaluative knowledge about field margins seems to be inaccurate, and agreements are partial or uncertain. Using a modified form of group polarization paradigm, our study examined the social and cognitive conditions under which environmental values tend to become more extreme. Intra-groups and inter-groups social contexts are organized with agricultural and environmental students. Discussion issues about fields margins are supported by descriptive items, evaluative items or photographs, that bring informational or normative influence. Attitudinal shifts are affected both by the type of group composition and the discussion supports. In inter-group context, agricultural interests are generally privileged.