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Judge-Jury Agreement In Criminal Cases: A Partial Replication Of Kalven And Zeisel's The American Jury, Theodore Eisenberg, Paula L. Hannaford-Agor, Valerie P. Hans, Nicole L. Waters, G. Thomas Munsterman, Stewart J. Schwab, Martin T. Wells Jun 2015

Judge-Jury Agreement In Criminal Cases: A Partial Replication Of Kalven And Zeisel's The American Jury, Theodore Eisenberg, Paula L. Hannaford-Agor, Valerie P. Hans, Nicole L. Waters, G. Thomas Munsterman, Stewart J. Schwab, Martin T. Wells

Valerie P. Hans

This study uses a new criminal case data set to partially replicate Kalven and Zeisel's classic study of judge-jury agreement. The data show essentially the same rate of judge-jury agreement as did Kalven and Zeisel for cases tried almost 50 years ago. This study also explores judge-jury agreement as a function of evidentiary strength (as reported by both judges and juries), evidentiary complexity (as reported by both judges and juries), legal complexity (as reported by judges), and locale. Regardless of which adjudicator's view of evidentiary strength is used, judges tend to convict more than juries in cases of "middle" evidentiary …


"Plain Crazy:" Lay Definitions Of Legal Insanity, Valerie P. Hans, Dan Slater Jun 2015

"Plain Crazy:" Lay Definitions Of Legal Insanity, Valerie P. Hans, Dan Slater

Valerie P. Hans

The 1982 Not Guilty by Reason of Insanity (NGRI) verdict in the trial of John Hinckley, Jr., would-be assassin of President Reagan, again has brought to the forefront long-standing public dissatisfaction in the United States with the insanity plea. In the wake of the Hinckley verdict, proposals for reform or abolition of the insanity defense have been submitted to both houses of the U.S. Congress and to state legislatures throughout the nation (Cunningham, 1983). Fueling this reform movement is apparent public dissatisfaction with the insanity plea as it is currently defined. In contrast to voluminous literature concerning legal and psychiatric …


Statistics In The Jury Box: How Jurors Respond To Mitochondrial Dna Match Probabilities, David H. Kaye, Valerie P. Hans, B. Michael Dann, Erin J. Farley, Stephanie Albertson Jun 2015

Statistics In The Jury Box: How Jurors Respond To Mitochondrial Dna Match Probabilities, David H. Kaye, Valerie P. Hans, B. Michael Dann, Erin J. Farley, Stephanie Albertson

Valerie P. Hans

This article describes parts of an unusually realistic experiment on the comprehension of expert testimony on mitochondrial DNA (mtDNA) sequencing in a criminal trial for robbery. Specifically, we examine how jurors who responded to summonses for jury duty evaluated portions of videotaped testimony involving probabilities and statistics. Although some jurors showed susceptibility to classic fallacies in interpreting conditional probabilities, the jurors as a whole were not overwhelmed by a 99.98% exclusion probability that the prosecution presented. Cognitive errors favoring the defense were more prevalent than ones favoring the prosecution. These findings lend scant support to the legal argument that mtDNA …


Nullification At Work? A Glimpse From The National Center For State Courts Study Of Hung Juries, Paula Hannaford-Agor, Valerie P. Hans Jun 2015

Nullification At Work? A Glimpse From The National Center For State Courts Study Of Hung Juries, Paula Hannaford-Agor, Valerie P. Hans

Valerie P. Hans

In recent years, the criminal justice community has become increasingly concerned about the possibility that jury nullification is the underlying motivation for increasing numbers of acquittals and mistrials due to jury deadlock in felony jury trials. In this Article, the authors discuss the inherent difficulty in defining jury nullification and identifying its occurrence in actual trials. They review the evolution in public and legal opinion about the legitimacy of jury nullification and contemporary judicial responses to perceived instances of jury nullification. Finally, the authors examine the possible presence of jury nullification through empirical analysis of data collected from 372 felony …


After The Crash: Citizens' Perceptions Of Connective-Tissue Injury Lawsuits, Valerie P. Hans, Nicole Vadino Mar 2012

After The Crash: Citizens' Perceptions Of Connective-Tissue Injury Lawsuits, Valerie P. Hans, Nicole Vadino

Valerie P. Hans

Even though automobile accident cases comprise a substantial portion of the state jury trial caseload, the humble automobile case has attracted minimal scholarly attention. However, many members of the public believe that whiplash, a connective-tissue or soft-tissue injury from auto accidents, is oftentimes fraudulent. To explore public perceptions, a national survey included a scenario experiment that varied types of minor injuries from an automobile accident. As predicted, the plaintiff who experienced a bone fracture was seen as more likely to be suffering a real injury than a plaintiff who reported suffering from a connective-tissue injury. The fracture was also viewed …


Taking A Stand On Taking The Stand: The Effect Of A Prior Criminal Record On The Decision To Testify And On Trial Outcomes, Theodore Eisenberg, Valerie P. Hans Mar 2012

Taking A Stand On Taking The Stand: The Effect Of A Prior Criminal Record On The Decision To Testify And On Trial Outcomes, Theodore Eisenberg, Valerie P. Hans

Valerie P. Hans

This article uses unique data from over 300 criminal trials in four large counties to study the relations between the existence of a prior criminal record and defendants testifying at trial, between testifying at trial and juries' learning about a criminal record, and between juries' learning about a criminal record and their decisions to convict or acquit. Sixty percent of defendants without criminal records testified compared to 45 percent with criminal records. For testifying defendants with criminal records, juries learned of those records in about half the cases. Juries rarely learned about criminal records unless defendants testified. After controlling for …


Juror First Votes In Criminal Trials, Stephen P. Garvey, Paula Hannaford-Agor, Valerie P. Hans, Nicole L. Mott, G. Thomas Munsterman, Martin T. Wells Mar 2012

Juror First Votes In Criminal Trials, Stephen P. Garvey, Paula Hannaford-Agor, Valerie P. Hans, Nicole L. Mott, G. Thomas Munsterman, Martin T. Wells

Valerie P. Hans

Our analysis of the voting behavior of over 3,000 jurors in felony cases tried in Los Angeles, Maricopa County, the District of Columbia, and the Bronx reveals that only in D.C. does a juror's race appear to relate to how he or she votes. African-American jurors in D.C. appear more apt to vote not guilty on the jury's first ballot in cases involving minority defendants charged with drug offenses. We find no evidence, however, that this effect survives into the jury's final verdict.


The Relation Between Punitive And Compensatory Awards: Combining Extreme Data With The Mass Of Awards, Theodore Eisenberg, Valerie P. Hans, Martin T. Wells Mar 2012

The Relation Between Punitive And Compensatory Awards: Combining Extreme Data With The Mass Of Awards, Theodore Eisenberg, Valerie P. Hans, Martin T. Wells

Valerie P. Hans

This article assesses the relation between punitive and compensatory damages by combining two data sets of extreme awards with state court data from the National Center for State Courts (NCSC) for 1992, 1996, and 2001. One data set of extreme awards consists of punitive damages awards in excess of $100 million from 1985 through 2003, gathered by Hersch and Viscusi (H-V); the other includes the National Law Journal's (NLJ) annual reports of the 100 largest trial verdicts from 2001 to 2004. The integration of these data sets provides the most comprehensive picture of punitive damages in American civil trials to …


The Twenty-First Century Jury: Worst Of Times Or Best Of Times?, Valerie P. Hans Mar 2012

The Twenty-First Century Jury: Worst Of Times Or Best Of Times?, Valerie P. Hans

Valerie P. Hans

In thinking about legal developments, new research findings, and the continuing swirl of controversy over this venerable American institution, I observe the same paradoxical condition that Charles Dickens found in 18th Century London: "It was the best of times; it was the worst of times." There is evidence of both the expansion of jury trial rights, yet contraction of jury trials. Research evidence indicates that juries perform well, yet the 21st Century jury confronts more complex decision making tasks and continuing doubts about its fairness and competence.


The Death Penalty In Delaware: An Empirical Study, John H. Blume, Theodore Eisenberg, Sheri Johnson, Valerie P. Hans Aug 2008

The Death Penalty In Delaware: An Empirical Study, John H. Blume, Theodore Eisenberg, Sheri Johnson, Valerie P. Hans

Valerie P. Hans

This article reports the findings of the first phase of a three phase empirical study of the death penalty in Delaware. In phase 1, we examined only cases in which the defendant was sentenced to death. While our findings are preliminary, there appear to be, as numerous other studies have found in other jurisdictions, race of victim effects. Seventy percent of the death sentences were imposed in white victim cases, even though the majority of the murder victims are black. Additionally, Delaware has one of the highest death sentencing rates in the country. This high rate appears to be the …