Dominant or upright postures can help people feel—and maybe even behave—more confidently. A new analysis by the Martin Luther University Halle-Wittenberg (MLU), the University of Bamberg and The Ohio State University has confirmed what small studies already suggested. The team evaluated data from around 130 experiments with a total of 10,000 participants. The results also disprove the controversial claim that certain poses influence a persons hormone levels. The study is published in the Psychological Bulletin.