To practice with the title of "psychologist", in almost all cases a doctorate degree is required (a PhD or PsyD in the U.S.). Normally, after the degree, the practitioner must fulfill a certain number of supervised postdoctoral hours ranging from 1,500 to 3,000 (usually taking one to two years), and passing the EPPP and any other state or provincial exams. A professional in the U.S. must hold a graduate degree in psychology (MA, Psy.D., Ed.D., or Ph.D.), or have a state license to use the title "psychologist". Additional regulations vary from state to state.