IQ and nonplanning impulsivity are independently associated with delay discounting in middle-aged adults

By H. de Wit, J. Flory, Ashley Acheson, M. McCloskey, S. Manuck. 2007

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Associations between a one-shot delay discounting measure and age, income, education and real-world impulsive behavior (2009, background): “De Wit et al. (2007) found higher education associated with lower discounting. Similarly, Jaroni, Wright, Lerman, and Epstein (2004) found a negative association between education and delay discounting in smokers (see also Harrison et al., 2002). De Wit et al. (2007) found that higher income was ass”
Age differences in future orientation and delay discounting. (2009, background): “Studies also find steeper discount functions among impulsive individuals and among individuals of relatively lower intelligence ( de Wit, Flory, Acheson, McCloskey, & Manuck, 2007 ).”
The Economics and Psychology of Personality Traits (2008, neutral): “Chao et al. (2007), de Wit et al. (2007), and Coller and Williams (1999) find no relationship between age and discount rate.”