Demosthenes Lorandos is a first-generation American of Greek and Australian descent. In the 1960s, he studied science at the New School for Social Research in New York City. He has been a clinical and forensic psychologist for more than five decades and is licensed at the highest level as a psychologist in California and Michigan.

In the 1980s he studied law with the Jesuits at the University of Detroit and became a trial attorney admitted to practice in New York; Washington, D.C.; California; Michigan; Tennessee; and many Federal District Courts; as well as the Second, Sixth, Ninth, and Eleventh Federal Circuits.

Dr. Lorandos has been a member of the United States Supreme Court bar for more than two decades. He has litigated pro hac vice in 20 additional state and federal courts. He has been a peer reviewer for law and science journals. He has published a variety of peer-reviewed scientific papers, in addition to law review and law journal articles in the last four decades. Along with the late Dr. Terence Campbell, he authored Cross Examining Experts in the Behavioral Sciences — with 20 years of annual updates. He has five books in print and has written numerous chapters for forensic science and legal texts.