13.1 Intent, Motive & Incapacity in Intentional Torts
Key Takeaways
- Intent in tort means either the purpose to cause the result or knowledge that the result is substantially certain to follow.
- Substantial certainty is measured subjectively by what this defendant knew, not by what a reasonable person would have foreseen.
- Motive is irrelevant to intent, so a defendant acting from benevolent motives is still liable if the intent element is satisfied.
- A mistake of fact does not negate intent, so a defendant who intends to take what he wrongly believes is his own chattel still commits conversion.
- Children and persons with mental illness are generally liable for intentional torts if they in fact formed the requisite intent, unlike in criminal law.
Intent, Motive & Incapacity in Intentional Torts
Doctrinal Foundation: In tort jurisprudence, intentional torts protect individuals and their property from volitional, wrongful intrusions. Unlike negligence, which balances conduct against an objective standard of reasonable care, intentional tort liability turns on the actor's state of mind regarding the consequences of their physical act. On the California First-Year Law Students' Examination (FYLSE), candidates must master the two alternative prongs of tortious intent, decouple intent from motive, recognize that good-faith mistake of fact does not negate tortious intent, apply the universal capacity rule to minors and mentally disabled actors, and trace the transferred intent doctrine across its strict common law boundaries.
I. The Definition and Dual Dimensions of Tortious Intent
Under the Restatement (Second) of Torts § 8A, the word "intent" denotes that the actor desires to cause the consequences of their act, or that they believe that the consequences are substantially certain to result from it. Tort law recognizes two distinct, alternative avenues for establishing intent:
- Specific Intent (Purpose or Desire): The defendant acts with the conscious objective, purpose, or desire to bring about the specific tortious consequence. For example, an actor swings a fist with the subjective goal of striking the plaintiff's jaw.
- General Intent (Substantial Certainty): The defendant does not necessarily desire or harbor a personal goal to cause the harm, but acts knowing with substantial certainty that the physical consequence will result from their volitional conduct.
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│ Dual Dimensions of Intent │
│ Restatement (Second) § 8A │
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[SPECIFIC INTENT: PURPOSE] [GENERAL INTENT: SUBSTANTIAL CERTAINTY]
- Actor subjectively desires the - Actor does not desire consequence,
prohibited consequence but knows it is substantially certain to occur
- Conscious objective to strike, - Near-inevitable physical consequence
confine, or invade - Garratt v. Dailey (5-year-old pulled chair)
The Landmark Principle of Garratt v. Dailey
The substantial certainty standard was established in the foundational case of Garratt v. Dailey, 46 Wash. 2d 197 (1955). In Garratt, five-year-old Brian Dailey pulled a lawn chair out from behind Ruth Garratt just as she began to sit down. The trial court initially found that Brian did not intend to injure the plaintiff. The Supreme Court of Washington remanded, holding that if Brian moved the chair knowing with substantial certainty that Ruth would attempt to sit where the chair had been and would contact the ground, he possessed the requisite intent for battery.
[!IMPORTANT] The Substantial Certainty Threshold vs. High Probability: Substantial certainty is not merely a high statistical probability, recklessness, or gross negligence. Driving 90 mph through a congested residential school zone creates an extreme, foreseeable risk of collision, but it does not establish substantial certainty that a specific pedestrian will be struck. Substantial certainty requires that the actor knows the consequence is practically inevitable as a direct result of their conduct.
The Fault Spectrum in Tort Law
To evaluate FYLSE tort questions accurately, candidates must place the defendant's mental state on the legal fault spectrum:
| Level of Fault | Mental State Standard | Defining Characteristic | Exemplary Case / Doctrine |
|---|---|---|---|
| Intent (Purpose) | Subjective desire | Conscious objective to produce the physical invasion | Actor shoots firearm directly at plaintiff |
| Intent (Substantial Certainty) | Knowledge of near-inevitability | Actor knows the physical result will occur | Garratt v. Dailey (pulling chair as victim sits) |
| Recklessness (Gross Negligence) | Conscious disregard of substantial risk | Highly unreasonable conduct involving an extreme departure from ordinary care | Firing rifle randomly into an open, uninhabited forest |
| Negligence | Failure to exercise reasonable care | Conduct creating an unreasonable, foreseeable risk of harm | Driver glancing at phone and drifting across lane |
| Strict Liability | Liability without fault | Liability imposed regardless of care due to inherent ultra-hazardous danger | Blasting with dynamite, keeping wild animals |
II. Motive vs. Intent
A critical trap on the FYLSE is confusing intent with motive. In intentional torts, the defendant's motive is generally immaterial to the existence of a prima facie case:
- Intent: Relates to the defendant's determination to bring about the immediate physical contact, apprehension, confinement, or property entry.
- Motive: Relates to the defendant's underlying reason, ultimate objective, or emotional impetus for desiring or causing that consequence.
The Immateriality of Benevolence, Humor, and Altruism
A defendant who intentionally causes harmful or offensive contact, confinement, or physical invasion is liable for an intentional tort even if the underlying motive was entirely benevolent, humorous, or intended to benefit the plaintiff:
- Practical Jokes: An actor who sneaks up behind a friend and aggressively bear-hugs them as a humorous surprise has committed battery if the contact is objectively offensive or harmful, regardless of whether it was intended as a prank.
- Unsolicited Medical Assistance: A physician who performs an unauthorized surgical procedure while a patient is anesthetized for a different operation commits battery, even if the procedure was medically beneficial, perfectly executed, and performed out of pure professional concern for the patient's long-term health.
- Role of Malice: Malice, spite, and ill will are not required elements of any intentional tort against person or property (with the narrow exception of malicious prosecution). Malice is relevant only to defeating qualified privileges or supporting a claim for punitive damages.
III. Mistake of Fact Does Not Negate Intent
In criminal law, a good-faith mistake of fact may negate the specific mens rea required for certain offenses (e.g., an honest mistake of ownership negates common law larceny). In sharp contrast, the common law rule in intentional torts is that mistake of fact does NOT negate intent:
- The Mistake Principle: If a defendant intends to bring about the physical condition or consequence that constitutes the tort, the defendant is liable even if acting under an honest, reasonable mistake of law or fact.
- Trespass to Land: An individual who walks across Blackacre reasonably believing it is their own land or public parkland is liable for trespass to land. The defendant intended to place their feet upon that specific soil; the mistake as to legal ownership or boundary lines is irrelevant (Perry v. Jefferies).
- Trespass to Chattels & Conversion: A defendant who purchases a stolen painting from a reputable art gallery in good faith, reasonably believing the gallery held valid title, is liable for conversion to the true owner upon refusing to surrender it. The defendant intended to exercise dominion and control over that specific chattel.
- Mistake in Self-Defense Distinguished: Mistake is relevant to affirmative privileges (e.g., a reasonable mistake regarding an imminent attack can support self-defense), but mistake never negates the prima facie intent element itself.
IV. Incapacity in Intentional Torts: Minors, Mental Disability & Intoxication
Unlike criminal law, which shields infants through the common-law "rule of sevens" and excuses mentally impaired defendants under insanity tests (such as M'Naghten), intentional tort law applies a universal capacity rule.
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[MINORS] [MENTAL DISABILITY] [INTOXICATION]
- No minimum age cut-off - Mental illness does not excuse - Voluntary or involuntary
- Liable if capable of forming tortious intent intoxication does NOT excuse
purpose or substantial certainty - Liable if intended contact, - Liable if volitional physical
- Parents NOT vicariously liable even if based on delusion movement accompanied by intent
at common law (McGuire v. Almy) - Not a defense in tort
1. Minors
There is no arbitrary minimum age below which a child is immune from intentional tort liability. If a child possesses the mental capacity to formulate the required purpose or substantial certainty, the child is legally responsible:
- A five-year-old child who pulls away a chair or throws a rock at another child is liable for battery if the child appreciated the physical reality of the act (Garratt v. Dailey).
- Very young infants (e.g., a one-year-old baby who strikes someone while flailing) lack the cognitive capacity to formulate intent; however, once a minor can appreciate physical cause and effect, liability attaches.
- Parental Liability at Common Law: Parents are not vicariously liable for the intentional torts of their minor children merely by virtue of the parent-child relationship. At common law, parents are liable only for their own independent negligence (e.g., negligent entrustment of a dangerous instrumentality or negligent supervision after knowing of a child's vicious propensities). In California, limited statutory vicarious liability is imposed by statute (Cal. Civ. Code § 1714.1) for willful misconduct up to a statutory dollar ceiling, but this is a legislative creation, not common law.
2. Mentally Disabled and Insane Individuals
Mental illness, insanity, or cognitive disability does not shield an actor from intentional tort liability (McGuire v. Almy, 297 Mass. 323 (1937); Polmatier v. Russ, 206 Conn. 229 (1988)):
- The Rule: An insane or mentally ill person is liable for an intentional tort if they intended to cause the physical consequence, even if their underlying reason or motivation was completely insane, delusional, or irrational.
- The Delusional Attack: If a defendant suffering from schizophrenia strikes a nurse with a wooden leg believing the nurse is a six-headed demon sent by the underworld, the defendant is liable for battery. The defendant intended to cause a harmful physical contact with the figure before them; the fact that the motivation was driven by a psychotic delusion does not negate the physical intent.
3. Intoxicated Individuals
Neither voluntary nor involuntary intoxication is a defense to intentional torts. A defendant who voluntarily consumes alcohol until heavily inebriated and then shoves another patron or walks onto private property remains fully liable for battery or trespass to land. As long as the defendant was capable of volitional physical movement and intended the act, intoxication provides no exculpation.
A five-year-old child was playing in the front yard of a neighbor's home. The neighbor, an elderly woman with arthritis, began to sit down in an outdoor patio chair. The child saw the woman beginning to sit, ran over, and pulled the chair away because the child wanted to sit in it himself. The woman fell heavily onto the concrete patio, suffering a fractured hip. In a tort action for battery brought by the woman against the child, what must the plaintiff establish regarding the child's state of mind to prove the requisite intent?
Defendant suffered from severe, untreated bipolar psychosis. While walking through an upscale shopping mall, Defendant experienced a visual and auditory delusion that an elderly pedestrian was an undercover alien spy about to detonate an explosive device. Believing he was heroically saving the mall's patrons, Defendant tackled the pedestrian to the floor, breaking the pedestrian's shoulder. In an intentional tort action for battery brought by the pedestrian against Defendant, will Defendant's mental illness and heroic motive prevent liability?