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Intentional or Negligent Homicide? Evidence for Juror Decision Making
Elisa Gambetti1, Raffaella Nori2, Fiorella Giusberti2
1Department of Psychology, University of Bologna, Italy e.gambetti@unibo.it.
Psychological Reports
|July 30, 2016
Summary
Evidence like motive, weapon skill, and prior violence significantly impacts juror decisions in homicide cases. These factors can shift verdicts from negligent to intentional homicide in civil law jurisdictions.
Area of Science:
- Psychology
- Law
- Criminology
Background:
- Juror decision-making is influenced by presented evidence.
- Understanding how specific evidence types affect homicide verdicts is crucial in legal contexts.
Purpose of the Study:
- To investigate the impact of motive, weapon skill, and prior violence on Italian students' verdicts in intentional versus negligent homicide cases.
- To analyze how these evidentiary elements influence the perception of criminal intent.
Main Methods:
- Participants (N=280 Italian students) were presented with affidavits manipulated for the presence or absence of motive, weapon skill, and prior violence.
- Participants rendered a verdict (intentional vs. negligent homicide) and provided confidence ratings.
Main Results:
- The presence of motive, weapon skill, and prior violence significantly increased the likelihood of an intentional homicide verdict compared to a negligent homicide verdict.
- These factors demonstrably influenced jurors' legal judgments.
Conclusions:
- Specific evidentiary elements, particularly motive, skill, and prior violence, play a critical role in shaping jurors' perceptions of criminal intent in homicide trials.
- Findings align with the folk-concept approach to intentionality, suggesting laypeople's understanding of intent is shaped by readily available contextual cues.
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