“…Aspirations and intentions to migrate have been analysed from both qualitative and quantitative angles (Docquier et al, ; Thulin and Vilhelmson, ; Gubert and Senne, ; Van Hear et al, ; Carling and Schewel, ; Carling and Collins, ; Dao et al, ; Williams et al, ). Many quantitative studies have tapped into the Gallup World Poll (among others, see Esipova et al, ; Docquier et al, ; Esipova et al, ; Cai et al, ; Bertoli and Ruyssen, ; Dao et al, ; Tjaden et al, ), but other examples have focused on, e.g. Latinobarometro, Arab Barometer (Graham and Markowitz, ; Falco and Rotondi, ), or ad hoc surveys (van Dalen, Groenewold, and Fokkema, ; van Dalen, Groenewold, and Schoorl, ; Williams et al, ).…”