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University of Pennsylvania Carey Law School

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Model Penal Code

Law and Psychology

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Articles 1 - 4 of 4

Full-Text Articles in Law

Before And After Hinckley: Legal Insanity In The United States, Stephen J. Morse Feb 2021

Before And After Hinckley: Legal Insanity In The United States, Stephen J. Morse

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This chapter first considers the direction of the affirmative defense of legal insanity in the United States before John Hinckley was acquitted by reason of insanity in 1982 for attempting to assassinate President Reagan and others and the immediate aftermath of that acquittal. Since the middle of the 20th Century, the tale is one of the rise and fall of the American Law Institute’s Model Penal Code test for legal insanity. Then it turns to the constitutional decisions of the United States Supreme Court concerning the status of legal insanity. Finally, it addresses the substantive and procedural changes that …


Mitigations: The Forgotten Side Of The Proportionality Principle, Paul H. Robinson Jan 2020

Mitigations: The Forgotten Side Of The Proportionality Principle, Paul H. Robinson

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In the first change to the Model Penal Code since its promulgation in 1962, the American Law Institute in 2017 set blameworthiness proportionality as the dominant distributive principle for criminal punishment. Empirical studies suggest that this is in fact the principle that ordinary people use in assessing proper punishment. Its adoption as the governing distributive principle makes good sense because it promotes not only the classic desert retributivism of moral philosophers but also crime-control utilitarianism, by enhancing the criminal law’s moral credibility with the community and thereby promoting deference, compliance, acquiescence, and internalization of its norms, rather than suffering the …


Predicting The Knowledge–Recklessness Distinction In The Human Brain, Iris Vilares, Michael J. Wesley, Woo-Young Woo-Young Ahn, Richard J. Bonnie, Morris B. Hoffman, Owen D. Jones, Stephen J. Morse, Gideon Yaffe, Terry Lohrenz, Read Montague Jan 2016

Predicting The Knowledge–Recklessness Distinction In The Human Brain, Iris Vilares, Michael J. Wesley, Woo-Young Woo-Young Ahn, Richard J. Bonnie, Morris B. Hoffman, Owen D. Jones, Stephen J. Morse, Gideon Yaffe, Terry Lohrenz, Read Montague

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Criminal convictions require proof that a prohibited act was performed in a statutorily specified mental state. Different legal consequences, including greater punishments, are mandated for those who act in a state of knowledge, compared with a state of recklessness. Existing research, however, suggests people have trouble classifying defendants as knowing, rather than reckless, even when instructed on the relevant legal criteria.

We used a machine-learning technique on brain imaging data to predict, with high accuracy, which mental state our participants were in. This predictive ability depended on both the magnitude of the risks and the amount of information about those …


The Disutility Of Injustice, Paul H. Robinson, Geoffrey P. Goodwin, Michael Reisig Dec 2010

The Disutility Of Injustice, Paul H. Robinson, Geoffrey P. Goodwin, Michael Reisig

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For more than half a century, the retributivists and the crime-control instrumentalists have seen themselves as being in an irresolvable conflict. Social science increasingly suggests, however, that this need not be so. Doing justice may be the most effective means of controlling crime. Perhaps partially in recognition of these developments, the American Law Institute's recent amendment to the Model Penal Code's "purposes" provision – the only amendment to the Model Code in the 47 years since its promulgation – adopts desert as the primary distributive principle for criminal liability and punishment. That shift to desert has prompted concerns by two …