“…They assume (19b') or (20b') for the coefficients on (i) consumption (n = c) (Blundell et al 1999, Haan 2006, Gerfin and Leu 2007, Bargain 2009), (ii) leisure (n = l) (Van Soest 1995, Van Soest and Das 2001, Gong and Van Soest 2002, Vermeulen 2006, Callan et al 2009, Shalhoub 2011 , and (iii) both consumption and leisure (n = c, l) (Duncan and Harris 2002, Brewer et al 2006, Mych et al 2006, Brink et al 2007, Baldini and Pacifico 2009). 8…”