Doctor of Philosophy, The Ohio State University, 2017, Psychology
Individuals endorsing higher rates of delay discounting (DD) tend to discount the value of future rewards, such that the perceived value of the future reward, though larger than an immediate reward, is viewed as less valuable. In turn, DD is associated with engaging in poor health behaviors, such as unhealthy diet and low levels of physical activity, both of which may increase risk of developing cardiovascular disease (CVD). Individuals with elevated genetic risk for CVD and higher rates of DD, are likely to be especially vulnerable to developing CVD. This randomized controlled study examined rates of DD among young adults with a family history (FH) of early-onset CVD (i.e., adults with higher genetic risk for CVD; FH+) and without a FH of CVD (FH-). Associations of DD, perceived CVD risk, physical activity, dietary sodium and lipid intake, as well as health behavior intentions were assessed before, immediately following, and one week after a standard educational intervention. In addition, FH was evaluated as a moderator of these associations. High rates of DD were hypothesized to correlate with sodium and lipid consumption, and negatively correlate with perceived risk of developing CVD, level of physical activity, and intention to engage in healthy behaviors. Further, it was hypothesized that FH+ participants randomized to the experimental condition would report greater reductions in DD, sodium and lipid intake, and increases in physical activity, perceived disease risk, and health behavior intentions, compared to FH- participants in the experimental condition, and participants in the control condition.
Fifty-four FH+ and 60 FH- adults between the ages of 18 and 40, with no personal history of CVD were randomized to view either an educational video about CVD, or a control educational video. Questionnaires assessed perceived risk of developing CVD, intention to engage in health behaviors, lipid and sodium intake, as well as physical activity. DD was assessed with (open full item for complete abstract)
Committee: Charles Emery PhD (Advisor); Melissa Buelow PhD (Committee Member); Julian Thayer PhD (Committee Member)
Subjects: Psychology