The average age of participants was 21.70 years
(SD = 2.91) and 59% were male. The ethnic breakdown of
participants was 33.3% Caucasian, 31.8% Asian American,
9.1% Latino, 4.5% African American, and 21.2% other. All
study procedures were approved by the Carnegie Mellon
Institutional Review Board. All study data was collected
between August 2012 and April 2013.