“…Many authors have discussed this issue from ecological Whittingham, 2007;Concepción et al, 2008), social and psychological (Beedell and Rehman, 1999;Willock et al, 1999;Wilson and Hart, 2000;Siebert et al, 2006;Guillem and Barnes, 2013) and economic (Falconer, 2000;Mettepenningen et al, 2011) perspectives. With respect to the social and psychological aspects, there are numerous studies on farmers' attitudes, perceptions and behaviour towards AES (Herzon and Mikk, 2007;Fjellstad et al, 2009;Giannoccaro and Berbel, 2013;Guillem and Barnes, 2013), the factors affecting farmers' willingness to participate (Sattler and Nagel, 2010;Schroeder et al, 2013) and the design of agri-environmental measures (Schroeder et al, 2013).…”