Park Dietz & Associates (PD&A) is a forensic consulting firm that brings together the talents of 27 leading authorities in a variety of related disciplines. The rapid growth of the knowledge base in the forensic sciences has increased the need for subspecialization and often requires a team approach to the evaluation of cases. PD&A provides clients with rapid access to an unparalleled depth and breadth of expertise on human behavior. Each PD&A expert has a national or international reputation in specific substantive areas. When the issues in a particular case warrant working together in teams, PD&A experts can address a broader range of issues at a higher level of expertise than could any one expert alone.

Disciplines

• Forensic psychiatry
• Child and adolescent forensic psychiatry
• Geriatric forensic psychiatry
• Forensic pathology
• Forensic neurology
• Forensic psychology
• Forensic neuropsychology
• Criminology
• Criminal investigative analysis
• Forensic social work

Qualifications

Within our firm you will find experts who have been:

• Educated at Princeton, Yale, Dartmouth, Cornell, the University of Pennsylvania, Johns Hopkins, U.C. Berkeley, the University of Virginia, and other major universities
• Medical and law school professors at Harvard, N.Y.U., U.C.L.A., the University of Virginia, and other major universities
• Heads of hospitals, a mental health system, academic departments, medical examiner offices, a community mental health center, teaching clinics, psychiatry training programs, child and adolescent psychiatry training programs, forensic psychiatry fellowships, psychology-law programs, research programs, and F.B.I. investigative units, teams, and programs
• F.B.I. supervisors and members of the internationally recognized Behavioral Science Unit of the F.B.I.'s National Center for the Analysis of Violent Crime
• Board certified in psychiatry, forensic psychiatry, child and adolescent psychiatry, forensic pathology and neurology
• President, Vice President, and committee chair for national professional organizations, including the American Academy of Psychiatry and the Law, the American Academy of Forensic Sciences, the American Psychology-Law Society, and the National Organization of Forensic Social Work
• Board examiners for the American Board of Psychiatry and Neurology
• Authors of more than 600 professional publications
• Editors of professional journals and books
• Invited to deliver more than 2,000 lectures and training programs in 40 countries in the Caribbean, North America, Central America, South America, Europe, the Middle East, Africa, Asia, and the South Pacific
• Commissioners or consultants to federal and state government commissions, including the U.S. House of Representatives Select Committee on Assassinations and the U.S. Attorney General's Commission on Pornography
• Invited to testify before the U.S. Congress and state legislatures
• Consultants to state and local governments in every state in the U.S., every province in Canada, and 25 other countries in the Caribbean, Central America, South America, Europe, the Middle East, Africa, Asia, and the South Pacific
• Consultants in more than 12,000 criminal investigations nationally and internationally
• Examiners in more than 25,000 forensic mental health evaluations and 20,000 forensic autopsies

Experience

PD&A experts have testified in thousands of civil and criminal matters on a wide array of topics (see Areas of Expertise). PD&A experts have testified or consulted in an unusual number of criminal matters of national and international interest, such as those involving:

• Serial killers, including Jeffrey Dahmer, Gerald Gallego, Robert Berdella, Son of Sam, Arthur Shawcross, Joel Rifkin, Ricardo Caputo, the Zodiac, the Green River murders, the New York Zodiac, Kendall Francois, the Boston Strangler, Nancy Hoyt, the Shotgun Stalker, Larry Gene Bell, Mary Beth Tinning, and Michael J. Swango
• Workplace mass murders, including Standard Gravure in Louisville, General Dynamics in San Diego, and Xerox in Honolulu
• School shootings at Columbine High School and schools in Los Angeles, Oregon, and Georgia
• Child killings, including Polly Klaas and JonBenet Ramsey
• Infanticide cases, including Amy Grossberg and the Prom Mom
• Attacks at the White House, the U.S. Capitol, the Today Show, and abortion clinics
• Assassinations and attempts against President Kennedy, Rev. Martin Luther King, Medgar Evers, Congressman Allard Lowenstein, and President Reagan
• Stalkers of John Lennon, Rebecca Schaeffer, Cher, Olivia Newton-John, and Michael Jackson
• Bombers, including Walter Leroy Moody, the World Trade Center bombing, the Oklahoma City bombing, the bombing at the Atlanta Olympics, abortion clinic bombings, and the Unabomber
• Murders, including the Yosemite murders, the Ted Binion murder, and cases against the Menendez brothers, O.J. Simpson, John DuPont, Susan Smith, and Christian Brando
• Hostage and barricaded subject situations, including the Attica prison riot, the Branch Davidians, Ruby Ridge, and the Freeman standoff

Examples of civil matters in which PD&A experts have testified or consulted include those involving:

• Claims against the Big Brothers, Boy Scouts of America, Y.M.C.A., Roman Catholic Church, schools, camps, and other organizations for sexual offenses against children
• Claims that medications caused a person to commit suicide or homicide
• Malpractice claims involving suicide, violence, or sexual behavior
• The Orange County bankruptcy litigation
• Civil suits against Soldier of Fortune magazine for murders for hire contracted through hit man advertisements
• The suit against the Jenny Jones Show and Warner Brothers for a former guest's criminal conduct
• The Ramona "recovered memory" trial
• The Sam Sheppard and O.J. Simpson civil cases
• Claims against property owners and businesses for crimes on their premises, including the shootings at the Vera Wang Bridal Salon and the Empire State Building
• The suit against the C.I.A. for alleged brainwashing experiments among Canadian mental patients
• Civil, criminal, and political questions arising postmortem, as in the explosions aboard TWA 800 and the U.S.S. Iowa or the deaths of John Belushi, Sid Vicious, and Czar Nicholas