Taught at the School of Psychology at the University of New South Wales in Sydney, Australia, the Communication Department at Rutgers University in New Jersey, and the School of Informatics at the University of Buffalo.
Because of his expertise in lie detection, Frank has acted as consultant for many different agencies, including the Los Angeles Sheriff's Department, the New Jersey State Troopers, the National Counter-Intelligence Executive, the National Response Team, the State Department, Bureau of Alcohol, Tobacco, & Firearms, Scotland Yard, the Australian Federal Police, The Hague Police in Holland, and Belgian and Singaporean authorities.
His father served on the Buffalo Police Department for 32 years.
Earned his Ph.D. in Social Psychology from Cornell University in 1989, and then received a National Research Service Award from the National Institute of Mental Health to do postdoctoral research in the Psychiatry Department at the University of California at San Francisco Medical School.
Psychologist Mark G. Frank, Ph.D., is an expert at telling whether people are lying; he has studied facial expressions and liars' verbal and written styles and strategies. His essays and articles include such titles as "Facing facts: Not all lies are created equal" and "Research methods in detecting deception research." He says he learned these skills when he was working as a bouncer in a bar in Buffalo, NY, where he needed to assess whether an underage patron was lying about drinking age or whether someone was looking for a fight.