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Polygraph Evidence and Juror Judgments: The Effects of Corroborating Evidence 1
Author(s) -
Myers Bryan,
Rosol Angela,
Boelter Eric
Publication year - 2003
Publication title -
journal of applied social psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.822
H-Index - 111
eISSN - 1559-1816
pISSN - 0021-9029
DOI - 10.1111/j.1559-1816.2003.tb01933.x
Subject(s) - polygraph , psychology , social psychology
A total of 169 college freshman were presented with a mock transcript of a sexual assault trial. We varied both polygraph expert testimony indicating that the defendant was deceptive (polygraph/no polygraph) and testimony by a medical expert and eyewitness who further corroborated the defendant's guilt (corroborating evidence/no corroborating evidence). Whereas the presence of corroborating evidence influenced verdicts as well as probability of commission (PC) estimates regarding the defendant, evidence of a failed polygraph test did not significantly influence verdicts or PC estimates, nor did the presentation of polygraph evidence interact with the corroborating evidence.