The Default Legal Person

Susanna L. Blumenthal

University of Minnesota - Law School and Department of History

UCLA Law Review, Vol. 54, No. 5, 2007

This Article explores the conceptions of responsible agency that informed legal analysis in nineteenth-century America. Standing behind the "reasonable man" famously drawn by Oliver Wendell Holmes, Jr., there was a second figure, which I call the "default legal person," who personified mental attributes an individual needed to possess - at a minimum - in order to be deemed a legally accountable agent. This default legal person, I argue, was first articulated in the post-Revolutionary period by jurists drawing on new "enlightened" forms of Protestantism, and particularly on the Scottish Common Sense philosophy in which they were schooled, in order to delineate the mental prerequisites of legal responsibility. The figure they constructed was, in essence, a creature of Common Sense, one divinely endowed with intellect, free will, and moral sense.

Turning to the law reports published over the course of the century, and focusing more particularly on the little-studied civil side of the docket, we find that judges tended to deploy the default legal person in the same fashion across cases and time. In any instance in which a plea of incapacity was made, this legal figure served to set the threshold of mental competence - to illustrate how much "mind" a person needed for a particular civil act or wrong to be attributed to him. Yet this is not to say that the threshold of capacity was set at the same level in every doctrinal field. To the contrary, judges altered the character of the default legal person as they transposed it from one field of law to the next, suggesting as they did that the specific mental attributes one needed to be a competent legal actor differed, depending upon the nature of the act involved - whether it was a will, contract, deed, or tort. Across all doctrinal fields, however, judges faced a similar and perplexing problem: How could they determine whether a given individual actually lacked the capacity to act with feeling, intelligence, prudence, or malice? Was it sufficient to show that the act itself was eccentric, or was it necessary to demonstrate that the party in question suffered from some sort of mental disease, as defined by medical men?

In contending with this problem over the course of the century, American judges took a variety of tacks, with more than a few lapsing into incoherence or simply evading the difficulties that litigants presented. However, upon closer scrutiny, it is possible to detect certain patterns to these rulings, and to see judges working to refine their characterizations of the default legal person, in part by varying the standard of mental capacity from one field of private law to the next. As they deployed this legal model in everyday adjudication, I argue, their judicial opinions helped to constitute a conception of responsible agency that was serviceable in the courtroom and beyond. Thus, I conclude that the default legal person may best be seen as a pragmatic means by which judges endeavored to monitor the borderlands of legal competency as they struggled to reconcile competing commitments to natural justice, market efficiency, and social welfare. In deciding cases by reference to this mental threshold, judges in this era demarcated the limits of rationality and responsibility in ways that were culturally contingent, politically consequential, and eminently contestable, ultimately reflecting basic ambiguities and tensions in the liberal legal construction of the moral agent.

Keywords: mental disability, mental competence, insanity, insanity defense, undue influence, fraud, civil liability, responsibility, reasonable man, capacity litigation, medical jurisprudence, legal history

JEL Classification: B30, K10, N31

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Date posted: August 1, 2007  

Suggested Citation

Blumenthal, Susanna L., The Default Legal Person. UCLA Law Review, Vol. 54, No. 5, 2007. Available at SSRN: http://ssrn.com/abstract=1003256

Contact Information

Susanna L. Blumenthal (Contact Author)
University of Minnesota - Law School and Department of History ( email )
229 19th Ave S.
Minneapolis, MN 55455
United States
612-626-5694 (Phone)
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