In most adversarial systems, jurors in criminal cases consider the binary verdict alternatives of "Guilty" and "Not guilty." However, in some circumstances and jurisdictions, a third verdict option is available: Not Proven. The Not Proven verdict essentially reflects the view that the defendant is indeed culpable, but that the prosecution has not proven its case beyond a reasonable doubt. Like a Not Guilty verdict, the Not Proven verdict results in an acquittal. The main aim of the two studies reported here was to determine how, and under what circumstances, jurors opt to use the Not Proven verdict across different case types and when the strength of the evidence varies. In both studies, jurors were more likely to choose a Not Proven verdict over a Not Guilty verdict when the alternative was available. When evidence against the defendant was only moderately strong and a Not Proven verdict option was available (Study 2), there was also a significant reduction in the conviction rate. Results also showed that understanding of the Not Proven verdict was poor, highlighting inadequacies in the nature of judicial instructions relating to this verdict.

Guardianship is intended to protect incapacitated individuals through the appointment of a surrogate decision maker. Little is known about how judges, attorneys, and professional guardians assess the need for guardianship, to what extent they apply statutory guidelines when making these determinations, and how their decisions compare. Three groups of participants (probate judges, elder law attorneys, and professional guardians) read vignettes portraying older adults that varied in the extent to which the evidence supported the appointment of a guardian. They were asked about the appropriateness of various resolutions. Participants were reluctant to endorse full guardianship even when warranted by the evidence and preferred informal, family-based interventions that do not involve legal action. Professional groups did not always agree on the appropriate resolutions, suggesting that one's professional orientation may play a role in perceptions of older adults.