Rationales: rejected, imagined and real – provocation, loss of control and extreme mental or emotional disturbance

Abstract

What makes intentional killing under provocation less reprehensible than murder? The answer to this question determines the rationale for the law; and the choice of the primary rationale – justificatory or excusatory – determines the scope and fundamental features of the partial defence.In this article, I attempt to parse through two reforms – one promulgated by the Model Penal Code 1980 (MPC), the other by the Law Commission for England and Wales – and compare their versions of the defence both to each other and to the ‘loss of self-control’ defence of the Coroners and Justice Act 2009 in the hope of determining and appraising the governing rationales for each version of the defence. I conclude that the largely justificatory defence of provocation developed by the Law Commission (and to a lesser degree the ‘loss of self-control’ defence) is legally and morally preferable to the largely excusatory defence proposed by the MPC.