PhD programs, or Doctor of Philosophy programs, are advanced academic degrees that focus on research and scholarship in a specific field. These programs typically require students to complete coursework, pass comprehensive exams, and conduct original research that culminates in a dissertation. PhD candidates often work closely with faculty advisors and may also teach or assist in research projects. Admission to a PhD program usually requires a relevant master's degree or a strong undergraduate background. Programs can vary in length, often taking three to seven years to complete, depending on the discipline and the student's progress. Graduates often pursue careers in academia, research, or specialized industry roles.