Given the task definition and input, reply with output. In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

One proponent of this idea wrote The Mentality of Apes while in Tenerife, where he also studied how people matched the words "takete" and "baluba" to spiky and rounded shapes, respectively. Another proponent of this idea illustrated the pitfalls of blindly obeying rules to solve problems in his book Productive Thinking. Fritz Perls developed a type of therapy based on this concept. Proximity, continuity, closure, and symmetry are among the tendencies explained by this idea's principle of (*) Pragnanz. A proponent of this idea defined the apparent movement caused by a changing static image as the phi phenomenon. It was first theorized by the trio of Kurt Koffka, Max Wertheimer, and Wolfgang Kohler. For 10 points, name this school of psychology that examines the brain's tendency to perceives the whole.
Social Science