“…Although several authors consider delay discounting as a behavioral feature of impulsivity (e.g., Ainslie, 1975;de Wit, 2009), the literature has not clarified the nature of this relationship. Some studies have observed an association between the two constructs (e.g., Alessi & Petry, 2003;Andrade & Petry, 2012;Kräplin et al, 2014;Petry, 2001aPetry, , 2012, whereas other studies have not confirmed this pattern of results (e.g., Madden, Petry, & Johnson, 2009;Wilde, Goudriaan, Sabbe, Hulstijn, & Dom, 2013).…”