“…Malinowski noticed that the islanders performed elaborate rituals when traveling in unpredictable and dangerous ocean conditions but not when traveling in shallow, calm waters, and concluded that the islanders used rituals as a way to reduce the tension associated with uncertainty and with the unknown. Indeed, across cultures and throughout history, rituals have often accompanied stressful transitions, such as deaths, births, weddings, and graduations, as well as stressful performance situations such as public speaking and sports (Celsi, Rose, & Leigh, 1993;Cohn, Rotella, & Lloyd, 1990;Kirschenbaum, Ordman, Tomarken, & Holtzbauer, 1982;Lobmeyer & Wasserman, 1986;Moore, 1986;Norton & Gino, 2014;Orlick, 1986;Wrisberg & Pein, 1992). For example, Lang, Krátký , Shaver, Jerotijević , and Xygalatas (2015) used motion-capture technology to quantify speakers' hand movements when asked to speak in public, finding that feelings of anxiety increased the repetitiveness and rigidity of hand movements -which are considered signs of ritualistic behavior.…”