“…Cadsby et al, 2007;Eriksson and Villeval, 2008;Teyssier, 2008;Bartling et al, 2009;Dohmen and Falk, 2011;Fehrenbacher and Pedell, 2012;Larkin and Leider, 2012;Macpherson et al, 2014). Dohmen and Falk (2011), for instance, introduce a sequential design in which they elicit productivity levels for a real effort task at first and, then, give participants the choice between a fixed and a variable scheme.…”