THIS IS PROFESSOR RAY BULL

BIOGRAPHY

• a Professor of Forensic Psychology whose main expertise relates to the conducting of investigations.
• He is the Director of Postgraduate Courses in Forensic Psychology at the University of Leicester.

MAJORS IN

• research interest is the investigative interviewing of suspects, witnesses and victims. Professor Bull conducts research on witness memory, including voice recognition.

HIS EXPERTISE

• Lie detection, also referred to as deception detection, uses questioning techniques along with technology that record physiological functions to ascertain truth and falsehood in response.

COMMONLY USED TOOLS

• Polygraph-
• a machine designed to detect and record changes in physiological characteristics, such as a person's pulse and breathing rates, used especially as a lie detector.