Examining pretrial publicity in a shadow jury paradigm

Issues of slant, quantity, persistence and generalizability

Tarika Daftary Kapur, Steven D. Penrod, Maureen O'Connor, Brian Wallace

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The purpose of this study was to examine the influence of pretrial publicity (PTP) on mock juror decision making. Specifically, we examined the influence of quantity and slant of the PTP (proprosecution vs. prodefense), the persistence of PTP effects over time, and whether the PTP effects demonstrated in research laboratories would also occur in more naturalistic settings (generalizability). Using a shadow jury paradigm we examined these effects using a real trial as stimulus. Mock jurors included 115 jury-eligible community members who were naturally exposed to PTP in the venue in which the actual case occurred and 156 who were experimentally exposed. We found mock jurors were significantly influenced by both the slant and quantity of the PTP to which they were exposed, such that those exposed to proprosecution or prodefense PTP tended to render decision in support of the party favored in the PTP, and those exposed to greater quantities of PTP tended to be more biased. Additionally, PTP effects persisted throughout the course of the trial and continued to influence judgments in face of trial evidence and arguments. A finding of no significant difference in the effect of exposure slant between the naturally exposed and experimentally exposed samples provides support for the external validity of laboratory studies examining PTP effects. This research helps address some of the concerns raised by courts with regard to the durability of PTP effects and the application of laboratory findings to real world settings.

Original languageEnglish
Pages (from-to)462-477
Number of pages16
JournalLaw and human behavior
Volume38
Issue number5
DOIs
StatePublished - 1 Jan 2014

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publicity
persistence
paradigm
Research
Decision Making
Paradigm
Publicity
Persistence
Juries
stimulus
decision making

Keywords

  • Court
  • Decision making
  • Effects
  • External validity
  • Juror
  • Pretrial publicity

Cite this

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title = "Examining pretrial publicity in a shadow jury paradigm: Issues of slant, quantity, persistence and generalizability",
abstract = "The purpose of this study was to examine the influence of pretrial publicity (PTP) on mock juror decision making. Specifically, we examined the influence of quantity and slant of the PTP (proprosecution vs. prodefense), the persistence of PTP effects over time, and whether the PTP effects demonstrated in research laboratories would also occur in more naturalistic settings (generalizability). Using a shadow jury paradigm we examined these effects using a real trial as stimulus. Mock jurors included 115 jury-eligible community members who were naturally exposed to PTP in the venue in which the actual case occurred and 156 who were experimentally exposed. We found mock jurors were significantly influenced by both the slant and quantity of the PTP to which they were exposed, such that those exposed to proprosecution or prodefense PTP tended to render decision in support of the party favored in the PTP, and those exposed to greater quantities of PTP tended to be more biased. Additionally, PTP effects persisted throughout the course of the trial and continued to influence judgments in face of trial evidence and arguments. A finding of no significant difference in the effect of exposure slant between the naturally exposed and experimentally exposed samples provides support for the external validity of laboratory studies examining PTP effects. This research helps address some of the concerns raised by courts with regard to the durability of PTP effects and the application of laboratory findings to real world settings.",
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Examining pretrial publicity in a shadow jury paradigm : Issues of slant, quantity, persistence and generalizability. / Daftary Kapur, Tarika; Penrod, Steven D.; O'Connor, Maureen; Wallace, Brian.

In: Law and human behavior, Vol. 38, No. 5, 01.01.2014, p. 462-477.

Research output: Contribution to journalArticleResearchpeer-review

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