Perry found that as college students were exposed to new ideas and viewpoints, they came to understand that it is possible to hold on an issue

   Multiple perspectives

Explanation:  Multiple perspectives and thinking thus created have a much greater ability to solve problems, therefore on any issue. So with new ideas and points of view, the ability to think on an issue increases and so does the problem-solving performance. All this has been proven by scientific research, and the greater the number of ideas, points of view and perspectives, the greater the number of emerging solutions that have been offered. This is because from multiple perspectives, the problem can be viewed from several aspects, so the number of solutions offered is larger, that is, it can be accessed from multiple starting points.