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Law and Psychology

University of Pennsylvania Carey Law School

Empirical studies

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Full-Text Articles in Law

Improving Lawyers’ Judgment: Is Mediation Training De-Biasing?, Douglas N. Frenkel, James H. Stark Oct 2015

Improving Lawyers’ Judgment: Is Mediation Training De-Biasing?, Douglas N. Frenkel, James H. Stark

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When people are placed in a partisan role or otherwise have an objective they seek to accomplish, they are prone to pervasive cognitive and motivational biases. These judgmental distortions can affect what people believe and wish to find out, the predictions they make, the strategic decisions they employ, and what they think is fair. A classic example is confirmation bias, which can cause its victims to seek and interpret information in ways that are consistent with their pre-existing views or the goals they aim to achieve. Studies consistently show that experts as well as laypeople are prone to such biases, …


Demand For Breach, Tess Wilkinson-Ryan Apr 2014

Demand For Breach, Tess Wilkinson-Ryan

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These studies elicit behavioral evidence for how people weigh monetary and non-monetary incentives in efficient breach. Study 1 is an experimental game designed to capture the salient features of the efficient breach decision. Subjects in a behavioral lab were offered different amounts of money to break the deal they had made with a partner. 18.6% of participants indicated willingness to break a deal for any amount of profit, 27.9% were unwilling to breach for the highest payout, and the remaining subjects identified a break-point in between. Study 2 is an online questionnaire asking subjects to take the perspectives of buyers …


"They Saw A Protest": Cognitive Illiberalism And The Speech-Conduct Distinction, Dan M. Kahan, David A. Hoffman, Donald Braman, Danieli Evans, Jeffrey J. Rachlinski Jan 2012

"They Saw A Protest": Cognitive Illiberalism And The Speech-Conduct Distinction, Dan M. Kahan, David A. Hoffman, Donald Braman, Danieli Evans, Jeffrey J. Rachlinski

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“Cultural cognition” refers to the unconscious influence of individuals’ group commitments on their perceptions of legally consequential facts. We conducted an experiment to assess the impact of cultural cognition on perceptions of facts relevant to distinguishing constitutionally protected “speech” from unprotected “conduct.” Study subjects viewed a video of a political demonstration. Half the subjects believed that the demonstrators were protesting abortion outside of an abortion clinic, and the other half that the demonstrators were protesting the military’s “don’t ask, don’t tell” policy outside a campus recruitment facility. Subjects of opposing cultural outlooks who were assigned to the same experimental condition …


Concordance & Conflict In Intuitions Of Justice, Paul H. Robinson, Robert O. Kurzban Jun 2007

Concordance & Conflict In Intuitions Of Justice, Paul H. Robinson, Robert O. Kurzban

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The common wisdom among criminal law theorists and policy makers is that the notion of desert is vague and the subject to wide disagreement. Yet the empirical evidence in available studies, including new studies reported here, paints a dramatically different picture. While moral philosophers may disagree on some aspects of moral blameworthiness, people's intuitions of justice are commonly specific, nuanced, and widely shared. Indeed, with regard to the core harms and evils to which criminal law addresses itself – physical aggression, takings without consent, and deception in transactions – people's shared intuitions cut across demographics and cultures. The findings raise …