De facto departures from insanity instructions: Toward the remaking of common law.

Abstract

De facto departures form the law (de jure) have been noted in such areas as jury revolts, jury nullification, extralegal concerns, and insanity. The thesis developed here is that (a) when such departures have occurred in insanity cases, acritical rather thaninstructive view of jurors has prevailed; (b) this critical view impedes efforts to empirically understand jurors' constructs of insanity and thereby restricts considered legal changes; (c) the Insanity Defense Reform Act of 1984 is illustrative of such narrowly considered changes, and, based on empirical findings, this act fails to instruct jurors or produce verdicts different from its predecessors; and (d) based on empirical findings, the common sense construals ofsane andinsane do emerge, complex though they be. Suggestions toward an empirically derived “common law” test of insanity, one that harmonizes legal, psychological, and common sense perspectives, are offered.