Expertise in Court: Perspectives on Testimony is the second of a two-volume set on the Psychology of the Courtroom. The authors, a renowned group of psychology and legal scholars, offer definitive coverage of the use of psychological expert testimony and evidence in a variety of legal contexts. They explore the controversies that surround it, from questions of its admissibility to its effects on eventual juror decisions. A wide range of topics are covered including system and estimator variables in eyewitness identification, expert testimony on psychological syndromes, the insanity defence and sexual harassment, how child sexual abuse is used by the courts, and recent research on false confessions. They also provide a comparative analysis exploring how different types of psychological expert testimony and evidence are used by different countries' legal systems. All the chapters conclude by making specific recommendations for how psychological research and information could be better utilized by courts around the world.