Also known as: provocation defence · provocation defences · provocation defenses · provocation · heat of passion defense · sudden provocation
Written by attorneys · grounded in primary & secondary sources — see below
A doctrine mitigating an intentional killing from murder to voluntary manslaughter when the defendant acts in the heat of passion upon adequate provocation before a reasonable cooling-off period has elapsed. Adequate provocation requires that the provocation would arouse sudden intense passion in an ordinary person, that the defendant was actually provoked, that a reasonable person would not have cooled, and that the defendant did not cool.
Phuong Pham returned home early and discovered her spouse in the act of adultery with another person. In immediate rage, Phuong grabbed a nearby object and struck the lover, causing death. The facts show adequate provocation under common law rules recognizing discovery of spousal adultery as sufficient to support the defense.
Priscilla Parks argued with a service manager over a repair bill and stepped into a restricted area. The manager shoved her hard, causing a fall and injury. In the tort action, the manager's provocation does not reduce compensatory damages but may limit any punitive award.
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Peter Park learned through a phone call that a coworker had insulted him weeks earlier. Peter confronted the coworker and killed him during the argument. The prior insults constitute mere words and old wrongs that fail to qualify as adequate provocation.
Pilar Pena discovered her close relative suffering a serious battery and immediately killed the attacker. The killing occurred while passion remained high. The facts support mitigation to voluntary manslaughter because the serious battery on a relative qualifies as adequate provocation.
Pierre Poulin suffered a serious battery and waited two hours before locating and killing the assailant. A reasonable person would have cooled during that interval. The passage of time prevents the provocation defense from applying.
Portia Price caught her spouse in adultery and killed the other person minutes later while still enraged. The facts establish that Portia remained in the heat of passion without cooling. The defense therefore reduces the charge to voluntary manslaughter.
Serious battery on the defendant or a close relative and catching a spouse in the act of adultery qualify as adequate provocation. Mere words, trivial battery, and old wrongs do not suffice.
Supporting sources
There must be insufficient time for a reasonable person's passion to cool, and the defendant must not have cooled in fact. A two-hour delay after provocation typically defeats the defense.
Supporting sources
Provocation does not reduce compensatory damages but is considered when deciding whether to award punitive damages and in what amount.
Supporting sources
…of the Fourteenth Amendment requires the prosecution to prove beyond a reasonable doubt the absence of the heat of passion on sudden provocation when the issue is properly presented in a homicide case. In that case, a Maine jury had been instructed that if the State established that the homicide was both intentional and unlawful,…