According to the Centers for Disease Control and Prevention (CDC), youth (ages 15–24 years) account for half of all new sexually transmitted infection (STI) cases (CDC, 2013), which could be reduced with safe sex practices. While the teen pregnancy rates have been on a decline for several years (Martin, Hamilton, & Osterman, 2017) and condom use rates in adolescents have increased (though with signs of a recent decrease; Copen, 2017; Reece et al., 2010), there is ongoing need to help increase safe sex practices (e.g., encouraging use of condoms even if a contraceptive pill is used to reduce STI risk). Unfortunately, some interventions have been found to be ineffective or sometimes iatrogenic (Kirby, Laris, & Rolleri, 2007). To better target these behaviors, we need a clearer understanding of the factors that contribute to adolescent decision-making.