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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: Addiction. 2017 Apr 20;112(7):1184–1192. doi: 10.1111/add.13823

Figure 2.

Figure 2

Prototypical trajectories of discounting rates (ln k) across age are plotted for binge-drinking adolescents and controls with a high (+0.5 SDs from the mean) and low FHD (−0.5 SDs from the mean). Binge-drinking (light red) and control (light blue) adolescents’ individual discounting rates (ln k) across age are plotted in the background. For reference, the prototypical trajectory of high-FHD individuals is one with a FHD of 0.55, or roughly the equivalent of having at least one parent with an AUD, similar to the definition of a FH+ in prior research (15–17). Meanwhile, the prototypical trajectory of a low-FHD individual is one with a FHD of 0.25, or an individual with AUD only in a second-degree relative.