Juror competence in civil trials: Effects of preinstruction and evidence technicality.

48 jury-eligible adults heard 1 of 4 versions of a tort trial. The design combined high and moderate levels of evidence technicality and the placement of substantive judicial instructions either before or after evidence presentation. Jurors given instructions before hearing the evidence for liability and before the evidence for compensation made clear distinctions among 4 differentially worthy plaintiffs, whereas jurors instructed after evidence presentation were not able to distinguish among the plaintiffs. Preinstructions enabled jurors to devise a causal model, as measured by both verbal representation of the evidence and recognition tests, that contained more probative evidence and less nonprobative and evaluative information than the models constructed by jurors who were postinstructed. Preinstructed jurors were better able than postinstructed jurors to correctly reject recognition items not part of the trial text and to correctly identify items from the trial. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The effects of complexity on jurors' verdicts and construction of evidence.

One hundred twenty mock jurors heard 1 of several versions of a civil trial. The tort trial was either high or low in information load and contained evidence that either clearly favored the plaintiffs or was ambiguous. Expert witnesses testified in either technical or less technical language. Verdicts favored the plaintiffs when the evidence was clear and was presented in technical language because technical language enhanced witnesses' credibility when the evidence was clear. Although high information loads and technical language hindered evidence processing, jurors endeavored to comprehend, as indicated by the recall of more facts and alternative constructions of the evidence when that evidence was ambiguous. However, those constructions were of poorer quality, incorporating evidence of lesser probative value. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Nominal and interactive groups: Effects of preinstruction and deliberations on deicisions and evidence recall in complex trials.

Two studies assessed the effects of preinstruction on decision making in simulated civil trials. In Study 1, substantive instructions were presented before the evidence, after the evidence, before and after the evidence, or not at all to nominal jurors who did not deliberate and to interactive jurors who did deliberate. Preinstructed nominal jurors differentiated among the plaintiffs in awarding damages, whereas postinstructed nominal and interactive jurors did not. Group discussion and preinstruction augmented damage awards and improved recall of evidence only for preinstructed jurors. Study 2 suggested that substantive preinstruction engaged a proplaintiff bias when trial evidence was technically difficult but enhanced systematic processing when the evidence was presented in less complex language. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of trial complexity on decision making.

The ability of a civil jury to render fair and rational decisions in complex trials has been questioned. However, the nature, dimensions, and effects of trial complexity on decision making have rarely been addressed. In this research, jury-eligible adults saw a videotape of a complex civil trial that varied in information load and complexity of the language of the witnesses. Information load and complexity differentially affected liability and compensatory decisions. An increase in the number of plaintiffs decreased blameworthiness assigned to the defendant despite contrary evidence and amount of probative evidence processed. Complex language did not affect memory but did affect jurors' ability to appropriately compensate differentially worthy plaintiffs. Jurors assigned compensatory awards commensurate with the plaintiffs' injuries only under low-load and less complex language conditions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Community members' perceptions of evidence: The effects of gender in a recovered memory civil trial.

Community members judged a civil trial in which a memory had either been recovered or kept secret until therapy 12 years later. Female jurors were more likely to find the defendant liable and to compensate female plaintiffs more than male plaintiffs, whereas the reverse pattern held for male jurors. Female plaintiffs who reported recovered memories were compensated least, whereas female plaintiffs who kept the abuse secret were compensated most. A mediational model was posited and results indicated that the origin of the memory of sexual abuse and victim gender influenced assessments of trial testimonies that were related to the trial outcomes. Results supported the postulated model and indicated significant juror-gender differences in evaluating and weighing the evidence. (PsycINFO Database Record (c) 2010 APA, all rights reserved)