A total of 306 participants (95 male, 73% Caucasian; also reported in Stewart, Bismark et al., 2010, Stewart, Towers, Coan, and Allen, 2010, and Stewart et al., 2011) with an age range of 17 to 34 years (M = 19.1, SE = 0.1) were enrolled in the study from a possible pool of over 10,000 individuals on the basis of their scores on the Beck Depression Inventory (BDI; Beck, Ward, Mendelson, Mock, & Erbaugh, 1961) completed during pre-testing in a large introductory psychology course or online after learning about the study from a flier or referral source. Individuals participated in a phone screening session administered by a post-bachelors project manager to screen for preliminary inclusion and exclusion criteria. To be eligible, individuals were required to be strongly right-handed (a score greater than 35 on the 39 point scale of Chapman & Chapman, 1987) and to report no history of: head injury with loss of consciousness greater than 10 minutes, concussion, epilepsy, electroshock therapy, use of current psychotropic medications, and active suicidal potential necessitating immediate treatment (although participation in current psychotherapy
