Interdisciplinary study is a multidisciplinary field that allows scholars to create a customized degree with two or more subjects such as sociology, history and government. Program participants can learn about how different, seemingly unrelated subjects combine to create one unified topic.

Requirements for the PhD program often involve the student having already obtained a Master’s degree. Additionally, a thesis or dissertation primarily consisting of original academic research must be submitted. In some countries, this work may even need to be defended in front of a panel.