Granted, the idea of someone playing video games to kill real people makes me angry and decision making around drone strikes is already questionable.
> Our pre-registered target sample size was 100 undergraduates recruited in exchange for course credit. However, due to software development delays in preparation for a separate study, we had the opportunity to collect a raw sample of 145 participants. Data were prescreened for technical problems occurring in ten of the study sessions (e.g., the robot or video projection failing), yielding a final sample of 135 participants (78.5% female, Mage = 21.33 years, SD = 4.08).