Social psychology studies how the thoughts, feelings, and behaviours of individuals can be influenced by the presence of others. Members of the Reverend Sun Myung Moon’s Unification Church are often married to one another in ceremonies of 10 000 people or more; in some cases couples do not know each other before the wedding begins. Social and religious movements such as this have the power to sway individuals.
AP PHOTO/AHN YOUNG-JOON