Rivalry consequences of fighting. However, when the competition is not enough in sports and the tensions are high fighting may ensue. Rivalries may increase motivation, lead to greater effort, and better performance. It may also contribute to greater risk taking behavior among participants, and increase a propensity for unethical behavior. These difference may lead to poor decision making on the part of groups and individuals that may not otherwise take place in the absence of a rivalry. Examples examined in the literature include the 1994 attacks by figure skater Tonya Harding against her rival Nancy Kerrigan, the admission in court by
Nancy Kerrigan broadcasts. During the 2010 Winter Olympics, Kerrigan served as a "special correspondent" for "Entertainment Tonight". She has written an instructional book on advanced figure-skating technique, "Artistry on Ice" (). In 2014, ESPN aired "The Price of Gold", a "30 for 30" documentary about the 1994 attack. On February 23, 2014, NBC aired a documentary during the 2014 Winter Olympics on the incident called "Nancy & Tonya". On March 1, 2017, Kerrigan was named as one of the contestants who would compete on season 24 of "Dancing with the Stars". She was paired with professional dancer Artem Chigvintsev. Despite receiving higher