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PubMed2000

The "hired gun" effect: assessing the effect of pay, frequency of testifying, and credentials on the perception of expert testimony.

Three experiments addressed the proposition that jurors use short cuts in processing information when confronted with expert scientific testimony. The results of the first two studies demonstrated that experts who are highly paid for their testimony and who testify frequently are perceived as "hired guns." They are neither liked nor believed. The results of the third experiment replicated the hired gun effect and showed that it is most likely to occur when the testimony is complex and cannot be easily processed. The results were discussed in terms of the theoretical differences between central and peripheral processing of persuasive messages in a legal context.

Adolescent↗
PubMed2005

[Rethinking criminal responsibility: practical application of operational diagnosis and gnostic into expert testimony].

There had been argument concerning the difference between the agnostic approach and the gnostic approach to the psychiatric perspective of criminal responsibility until the landmark ruling by the 3rd court of the Japanese Supreme Court in 1984. The decision upheld the gnostic approach and affirmed that the defendant's criminal responsibility should be based on such factors as psychopathology, motive, modus operandi, situation surrounding the crime, and pre-morbid personality, as long as the offense was not directly motivated by the delusion or hallucination. The gnostic explanation includes so many various factors that the psychiatric testimony cannot easily be objective, while agnostic experts can find a conclusion about criminal responsibility only by psychiatric diagnosis. To establish a standard, the authors summarized the means of determination of criminal responsibility. The authors also discussed various topics related to criminal responsibility including Asperger's syndrome, illicit drug intoxication, and prescribed drug intoxication.

Amphetamine-Related Disorders↗