Applying the Negation Test

Applying the Negation Test

Section 2.04(1)(a) makes a mistake a defense when it negatives the purpose, knowledge, belief, recklessness, or negligence required to establish a material element of the offense.¹ The wording is compact enough to hide the fact that it describes a procedure, and the procedure has the same shape whether the defendant misjudged a fact about the world or a legal matter. Its central feature is that it measures the defendant's belief against what the offense requires. Whether the belief was also reasonable is a separate question, which depends on the mental state the offense demands and is taken up later in this chapter. The point needs stating because some decisions announce, usually without explanation, that every mistake must be reasonable, and treating one condition as universal is a major source of confusion in this area.² Running the negation test element by element avoids that confusion, since the mental state attached to each element, and no general standard of prudence, decides what the belief must defeat.

The third step is a question about coexistence: one identifies the mental state the crime requires and then asks whether that mental state can exist in light of the defendant's ignorance or mistake.³ The first two steps exist to make that question answerable, because a belief cannot be compared with a mental state until the mental state has been located on a particular element. Locating it also explains why one belief can be decisive in one prosecution and irrelevant in another. An offense that attaches purpose to the conduct and knowledge to a surrounding circumstance gives the defendant's belief two separate targets, and a mistake aimed at one leaves the other intact. Students lose this analysis when they ask only whether the defendant was wrong and never ask which element the mistake touches. The structure also keeps the defense within bounds, because a belief that is unrelated to any mental state the legislature required cannot excuse anyone. A general honest-error defense would erase the differences among offenses that were written to demand different degrees of culpability, and the element-by-element method prevents that result.

The same structure appears outside the Model Penal Code. In international criminal law, article 32(1) of the Rome Statute lets a mistake of fact exclude criminal responsibility "only if it negates the mental element required by the crime."⁴ Article 32(2) treats a mistake about whether conduct is a crime within the Court's jurisdiction as insufficient by itself, though it may count if it negates the required mental element. The comparison shows that tying mistake to mental state is a general design choice and not a quirk of one code.

The three subsections below develop the moves one at a time. The first takes a mistake about a fact toward which the offense's mental state is directed, which is the simplest application of the third step. The second shows that a mistake about a legal matter that forms part of an element works the same way, because the test examines the belief's effect on the mental state and does not depend on whether the belief is labeled fact or law. The third supplies the limit that keeps the test honest: the mistake must reach a material element and the mental state attached to it, so an error about a detail the offense does not care about gives the defendant nothing.

Mistake of Fact

The simplest application of the negation test arises when the defendant is wrong about a fact toward which the offense's mental state is directed. Section 2.04(1)(a) makes that kind of mistake a defense because it negatives the purpose, knowledge, belief, recklessness, or negligence required to establish a material element.⁶ The reason lies in what those mental states are. Purpose, knowledge, and recklessness are states of mind about the world: an aim to bring about a result, an awareness that a circumstance exists, or an awareness that a risk is present. A person who honestly believes the world is otherwise cannot hold a state of mind that depends on its being a certain way, so the mental state is missing and the element goes unproved. The umbrella taker met earlier in this chapter shows the pattern at its smallest scale, since a diner who sincerely thinks the umbrella is his own lacks the intent to steal the property of another.⁷

A more serious illustration comes from People v. Crane, a murder prosecution in which the defendant burned the body of a man named Gahan. The defense rested on self-defense and on mistake of fact, and there was some evidence from which a jury could conclude that the defendant set the fire believing Gahan was already dead.⁸ The jury had been told that murder required the State to prove that the defendant performed the acts that caused the death, and that he either intended to kill or do great bodily harm or knew his acts created a strong probability of death or great bodily harm.⁹ Running the negation test, the mental state attached to the result is intent or knowledge directed at the death or serious injury of a living person, and the question is whether the defendant's actual belief can coexist with it. A person who believes the victim is already dead cannot intend to kill that victim, and cannot know that setting the fire creates a strong probability of death, because in that person's mind there is no one left to kill. The belief and the mental state cannot exist together, so the mistake negates the element of mental state that murder requires.

The burden discussion earlier in this chapter left open what the jury is told once the evidence raises a mistake, and Crane supplies the answer. The trial court conceded that the instruction the defendant tendered on mistake of fact stated the law accurately, but it refused the instruction on the ground that the standard murder instruction already covered the mental state requirement.¹⁰ The reviewing court identified the gap: the standard instruction told the jury what the State must prove but never drew attention to mistake of fact, so when the evidence supports that defense, informing the jury of the mental state is not enough and the jury must also be told that the defense is valid.¹¹ Because the defendant's whole case rested on self-defense and mistake of fact, and some evidence would let a jury find the mistaken belief, the omission could not be treated as harmless.¹² The reasoning follows from how the mistake works. A mistake is a way of defeating the prosecution's proof on a mental-state element, and jurors given only the abstract elements may never connect a belief that the victim was already dead to the conclusion that intent to kill is unproved. Students tend to assume that the standard mental-state instruction makes a separate mistake instruction redundant, and the decision rejects that assumption.

The same logic reaches mistakes about circumstances as well as results. In Morissette v. United States the defendant loaded, crushed, and hauled away casings belonging to the United States in broad daylight and in full view of passers-by, and then told investigators candidly that he thought the casings were abandoned and unwanted.¹³ He was charged under a statute reaching one who knowingly converts government property, and the trial court refused to let him show his belief, telling the jury that his own admission that he took the property established his intent.¹⁴ The Supreme Court declined to read the statute as dropping the traditional requirement of a culpable state of mind, and it explained that knowing conversion requires knowledge of the facts that make the taking a conversion, so a person who truly believed the casings abandoned could not have knowingly converted them.¹⁵ What distinguishes the two cases is the target of the mistake. In Crane the defendant misjudged the victim's condition, which defeated intent or knowledge as to the result, while in Morissette the defendant misjudged the status of the property, which defeated knowing conversion, a mental state tied to a surrounding circumstance. In both, the mistake worked because the offense attached a mental state to the very fact the defendant got wrong. The Court's remark that the required knowledge is of facts, though not necessarily of law, points ahead to the next subsection, where a mistake about a legal matter inside an element is treated the same way.

The analysis turns on what the defendant actually believed, which is a question for the factfinder, so a claimed belief the jury rejects negates nothing, just as the defendant who saw the chest rise holds no belief to credit. Whether the belief must also be a sensible one depends on the mental state the offense demands, and the chapter takes up that question later. On a mistake-of-fact problem the working sequence is to find the element that the misjudged fact belongs to, find the mental state attached to that element, and ask whether the belief can sit alongside that mental state; when the evidence supports a yes answer, the jury hears about the defense by name.

Mistake of Law About Elements

Section 2.04(1)(a) treats a mistake about law exactly as it treats a mistake about fact: either one is a defense when it negatives the purpose, knowledge, belief, recklessness, or negligence required for a material element.¹⁸ A legal mistake can do this work because offense definitions are full of legal concepts. Ownership, marital status, and lawful authority are all matters of law, and offenses routinely make them elements, with a mental state directed at the legal status itself.¹⁹ A defendant who misunderstands that status lacks the required awareness in the same way a defendant who misperceives a physical fact lacks it, so a mistake about such a collateral legal matter is analyzed as a mistake about an element. The familiar label ignorance of the law hides this point, because it is applied both to a defendant who misjudges the legal effect of some collateral matter and to one who simply did not know that a statute forbade the conduct, and those two situations call for different analysis and often different results.²⁰

Larceny shows the first kind at work. The offense requires an intent to steal property belonging to another, so the ownership element carries its own mental state. A defendant who takes a chattel because, through a mistaken view of property law, he believes that his earlier dealings with the owner vested title in him lacks that intent, for the same reason that the restaurant patron who leaves with the wrong umbrella lacks it.²¹ Running the negation test makes the point mechanical. The element is that the property belongs to another, the mental state attached to it is intent to steal that property, and the defendant's belief, taken as true, is that the property is his own. That belief cannot coexist with an intent to steal what belongs to someone else. The error concerned law rather than fact, but it operated on the ownership element, and that is the feature that gives it force.²²

Two decided cases apply the same logic. In Regina v. David Smith, a tenant preparing to leave his apartment damaged wall panels and floor boards to retrieve stereo wiring he had installed with the landlord's permission. He had bought and fitted the panels and boards himself, but once affixed they became the landlord's property as a matter of law.²³ The criminal damage statute required intent or recklessness with reference to property belonging to another, and the court of appeal reversed because an honest though mistaken belief that the property was his own meant no offense, whether or not the belief was justifiable.²⁴ In State v. Varszegi, a commercial landlord who believed the lease's default clause entitled him to act picked the lock of a tenant's office on a weekend and took two computers. The appellate court reversed his theft conviction, reasoning that a defendant who acts under a subjective belief in a lawful claim to the property lacks the intent to steal.²⁵ The two defendants erred about different legal matters, the law of fixtures in one case and the rights a lease conferred in the other, yet each misjudged his legal entitlement to the specific property, which is the matter the offense's mental state is aimed at. Whether such a belief must also be reasonable is a separate question that this chapter takes up later.

The same family includes the bigamy defendant who mistakenly believes that a prior divorce is valid. The error concerns the legal effect of a collateral matter, the divorce, and it bears on whether a prior marriage still exists.²⁶ Whether it defeats a given conviction turns on the question every claim in this family asks, which is whether the belief can coexist with the mental state the offense attaches to that circumstance. Some offenses go further and write legal knowledge into the definition. Model Penal Code § 224.13 punishes a fiduciary who disposes of entrusted property in a manner the fiduciary knows is unlawful and that creates a substantial risk of loss to the person for whom the property is held, so no one can commit it without considerable legal knowledge.²⁷

The second trustee illustrates the other meaning of ignorance of the law, which leaves every element and every mental state intact. A defendant who takes an umbrella he knows belongs to someone else, and who can honestly say he did not realize the taking was a crime, still has the intent to steal.²⁸ The same is true of a defendant who knows the property is another's but believes that community custom makes taking that kind of property lawful. His belief concerns whether the conduct is permitted and leaves the ownership element untouched, and the offense punishes intentionally doing the act without requiring any intent to violate the law.²⁹ That kind of claim is generally not a defense,³⁰ and the final section of this chapter takes it up on its own terms.

The trap is to treat every legal error alike, either excusing all of them because the defendant was sincerely mistaken or excusing none because the law is presumed known. Step two does the real work, because the answer depends on whether the legal matter sits inside an element, and the same defendant can have a good claim on one element and no claim on another.

Other fields reach the same treatment of legal error. In Unicolors, Inc. v. H&M Hennes & Mauritz, L.P., a civil case under the Copyright Act, the Supreme Court held that an applicant who was unaware of the legal requirement that made its application inaccurate lacked the knowledge the statute demanded, and it saw no reason to treat a mistake of law differently from a mistake of fact.³¹ Civil contract law likewise now treats a mistaken understanding of law as analogous to a mistake of fact, after early cases assumed that everyone knows the law.³² These are civil analogies and not criminal authority, but they show that the logic of tying legal error to a required mental state is not peculiar to the Model Penal Code.

Matching Mistake to Element

Section 2.04(1)(a) does not excuse every error a defendant can point to. It makes a mistake a defense only when the mistake negatives the purpose, knowledge, belief, recklessness, or negligence required to establish a material element of the offense.³⁵ Two conditions must line up. The error has to concern a fact or legal matter inside a material element, and the mental state the offense attaches to that element has to be one the error defeats. The reason for the pairing is that a mental-state requirement marks the specific wrongdoing the offense was written to punish. When a defendant's error lies somewhere else, the defendant remains exactly as culpable with respect to what the offense punishes as one who made no error at all, and nothing about the mistake calls for acquittal.

Receiving stolen property shows the matching step in its simplest form. The offense punishes receiving goods knowing they were stolen, so the critical mental element is knowledge about the illegal means by which the goods were obtained.³⁶ A defendant who knows the goods are stolen but believes they are television sets when they are really radios has made an error, yet the error does not touch that element, because the offense never asks what kind of goods they were. Her knowledge that they were stolen is intact, so the mistake is no defense.³⁷ The general form of the point is that when a deed would amount to exactly the same crime under either of two factual situations, mistaking one situation for the other excuses nothing.³⁸ A receiver who takes radios for televisions is as aware of the theft as a receiver who sees the radios for what they are, so the error removes none of the culpability the knowledge requirement measures.

Change one variable and the answer reverses. A defendant who buys goods without knowing they were stolen lacks the knowledge the offense requires. The ignorance may rest on a mistake of fact about where the seller got the goods or on a mistake of law, such as a belief that the seller had acquired good title, and the result is the same either way. It also holds when a prudent person in the same position would have suspected the theft.³⁹ The prudent buyer's suspicion is beside the point because the offense asks what this defendant knew, not what a careful buyer would have worked out. For purpose, knowledge, and recklessness, a defendant who honestly believes a fact does not exist, however unreasonably, does not know the contrary, as with the possessor who thinks a white powder is salt when it is cocaine.⁴⁰ The two defendants in this pair differ in one respect only, which is whether the error goes to the thing the knowledge requirement is about. Whether a careless belief should ever be treated differently is the question of reasonableness, and the next section of this chapter takes it up directly.

A limit on the mistake claim comes from the Code's own definition of knowledge. When knowledge of a fact is an element, § 2.02(7) treats the element as established if the defendant is aware of a high probability that the fact exists, unless the defendant actually believes it does not exist.⁴¹ What negates knowledge, then, is a genuine contrary belief, and an unresolved doubt does not qualify. The reason is an incentive problem. If knowledge demanded certainty, a defendant could avoid it by declining to confirm a strong suspicion, since the less he checked, the less he would know. Requiring an actual belief that the fact is not so closes that route, and it is why the Code counts those who see a high probability of a fact as knowing it.⁴²

Because the inquiry is about what each buyer actually believed, the factfinder decides whether the claimed belief was genuinely held, and circumstances like the scraped serial plate are evidence on that question. Such red flags do not convert an honest belief into knowledge, but they make an honest belief harder to credit.

The trap on an exam is treating any mistake as a defense because the defendant was plainly wrong about something. Step three does the sorting, and a jurisdictional fact shows how. A defendant who knows she possesses cocaine but thinks she is in a county with a lower penalty than the county where she actually stands has erred about a fact that goes only to where the crime will be prosecuted, not to whether a crime occurred, and her required mental state is untouched.⁴³ Step four catches the quieter version of the trap, since a defendant who says only that he was not sure has described doubt, and doubt that falls short of a genuine contrary belief leaves knowledge in place.