How long does it take to become an experimental psychologist?Experimental psychologists generally require graduate education to enter the field. Master’s degrees in experimental psychology are usually two-year full-time programs, though some schools offer dual degree programs that can lead to a Bachelor of Arts in Psychology and a Master of Science in Experimental Psychology that takes five years to complete. A doctorate can take four to seven years to complete on top of a bachelor’s degree. The length of time it takes to finish an online degree for experimental psychology will also depend on your prior education, whether you attend full time or part time, and if you need to taking any prerequisite courses before starting the program.