Evidence Fall Build · Chapter Two
Character, Other Acts, Habit, and Policy Exclusions
Evidence can be relevant and still be excluded.
That principle is especially important in the rules governing character, other acts, habit, subsequent remedial measures, settlements, medical payments, plea discussions, liability insurance, and sexual-misconduct evidence. These doctrines do not usually begin with the conclusion that the evidence lacks logical relevance. In many situations, the evidence may strongly affect the probability of a disputed fact. The problem is that the legal system either distrusts the reasoning the evidence invites or seeks to promote a policy that would be undermined if the evidence were routinely admitted.
The central lesson is therefore:
Relevant evidence may still be excluded because the law distrusts the inference or wishes to promote an important policy.
For character evidence, the principal concern is propensity reasoning. For Rules 407 through 411, the rules frequently reflect broader policy judgments about safety improvements, settlements, humanitarian payments, plea negotiations, and insurance. Rules 412 through 415 address a particularly sensitive area in which relevance, prejudice, privacy, and special statutory treatment intersect.
The analytical discipline introduced in relevance doctrine remains essential. Students should continue to ask what the evidence is offered to prove. That question determines whether a prohibited inference is being used, whether an exception applies, and whether Rule 403 remains an additional barrier.
The fundamental character rule is easy to state but frequently difficult to apply.
Character evidence generally cannot be introduced simply to establish this chain of reasoning:
A person possesses a particular character trait.
Therefore, the person probably acted consistently with that trait on the occasion being litigated.
Suppose the prosecution offers evidence that the defendant has acted violently in the past and argues that the defendant therefore probably committed the charged assault. The reasoning is:
The defendant is violent → violent people commit assaults → the defendant probably committed this assault.
That is classic propensity reasoning.
Rule 404 generally prohibits this use unless an exception applies.
The concern is not necessarily that the earlier conduct is irrelevant. Prior violent behavior may make later violent behavior seem somewhat more probable in an ordinary probabilistic sense. The restriction reflects distrust of the inference and the risks associated with allowing the factfinder to decide the case based on a generalized judgment about the person.
A jury asked to decide whether the defendant committed the charged act should ordinarily focus on proof of the charged event rather than reasoning that a “bad person” probably acted badly again.
When character evidence appears, write out the proposed inference. If the argument is essentially “this person has trait X, so this person probably acted in accordance with trait X on this occasion,” you have identified propensity reasoning.
Character evidence is treated differently when the character trait is not merely being used as circumstantial proof of conduct but is itself legally in issue.
The distinction is fundamental.
When character is used circumstantially, the proponent asks the factfinder to infer conduct from a trait. That use is often restricted.
When character itself is an element of a claim, charge, or defense, character is substantive evidence of a matter the law directly requires the factfinder to determine.
Potential examples include negligent entrustment, defamation, some child-custody contexts, and some loss-of-consortium situations involving character issues.
The important analytical question is not merely whether the case “involves” someone’s character. The question is whether the existence of the trait itself is part of what the legal claim, charge, or defense requires.
Assume a plaintiff claims that an owner negligently entrusted a dangerous instrumentality to another person because the owner knew that the recipient was habitually reckless.
Evidence concerning the recipient’s recklessness may matter not simply because reckless people tend to act recklessly on particular occasions, but because the relevant trait may itself bear directly on the negligent-entrustment theory.
The use therefore differs from offering prior reckless acts merely to show that the person probably behaved recklessly during the incident being litigated.
Do not say that character evidence is always inadmissible. First determine how the trait is being used. Character offered as circumstantial propensity evidence is treated differently from character that is itself a substantive element.
A criminal defendant may generally introduce evidence of the defendant’s own pertinent character trait.
The word pertinent matters.
A defendant charged with assault, for example, may seek to offer evidence of peacefulness because peacefulness bears on the type of conduct alleged. A trait that has no meaningful relationship to the charged conduct would not become admissible merely because it is favorable to the defendant.
This rule also reflects the importance of identifying who introduced the evidence. A criminal defendant may choose to place a pertinent character trait before the factfinder. Once the defendant opens that door, the prosecution may receive an opportunity to rebut.
Students should ask four questions:
Which trait is involved?
Is the trait pertinent to the charged conduct?
Who introduced the character issue?
What method of proving the trait is permitted?
The last question leads directly to Rule 405.
In appropriate criminal cases, the defendant may offer evidence concerning a pertinent character trait of the alleged victim.
Self-defense cases provide the most familiar setting. If the defendant claims that the alleged victim was the aggressor, evidence concerning the victim’s violent character may become relevant under the applicable character rules.
The prosecution may then receive corresponding rebuttal opportunities.
The point is not that all evidence concerning a victim’s character is admissible whenever self-defense is raised. The same questions still matter: Which trait is being offered? Why is it pertinent? Which party introduced it? What method of proof is permitted?
Students must also remember that sexual-misconduct cases are governed by special rules. Character principles cannot simply be applied without considering Rule 412 and the special treatment reflected in Rules 413 through 415.
Homicide cases contain a special character rule that students should distinguish from the ordinary framework.
In an appropriate homicide case, the prosecution may offer evidence of the alleged victim’s peaceful character to rebut evidence that the victim was the first aggressor.
The significance lies in the triggering circumstance. This is not simply a general right of the prosecution to portray the victim as peaceful. The rule operates in response to evidence suggesting that the victim initiated the violence.
When a homicide problem includes an assertion that the victim was the first aggressor, consider the special peacefulness rule separately rather than analyzing the problem solely through the ordinary defendant-and-victim character framework.
Even when character evidence is admissible, the method of proving character matters.
Rule 405 distinguishes among reputation evidence, opinion evidence, and evidence of specific instances of conduct.
A witness may testify about a person’s reputation regarding a pertinent character trait. A witness may also provide a personal opinion concerning that trait.
Specific acts are more restricted.
Specific instances of conduct ordinarily are not used on direct examination merely to prove that a person has a character trait. When character itself is an essential element, however, specific acts may be used substantively.
Specific acts may also become relevant on cross-examination under the applicable rules.
The key lesson is that admissibility of character does not automatically authorize every method of proof.
Students sometimes complete the character analysis after deciding that a pertinent trait is admissible. Do not stop there. Always ask how the proponent is attempting to prove the trait.
Rule 404(b) addresses one of the most heavily tested distinctions in Evidence.
Another crime, wrong, or act ordinarily cannot be introduced simply to show that the person is bad and therefore probably committed the charged or disputed act.
The forbidden reasoning resembles ordinary character propensity:
The defendant did something wrong before → the defendant is the kind of person who does this sort of thing → the defendant probably did it again.
But another act may be relevant for a nonpropensity purpose.
Examples include motive, opportunity, intent, preparation, plan, knowledge, identity, absence of mistake, and lack of accident.
Students often remember lists or mnemonics for these purposes. The danger is treating the label as the analysis.
Writing “admissible because motive” is not enough.
A proper Rule 404(b) analysis identifies the precise proposition the evidence tends to establish and explains the inferential chain without relying on character propensity.
A structured analysis should ask:
What precise fact is the other act offered to establish?
Is that fact genuinely disputed?
Does the evidence support a nonpropensity inference?
Is the other act sufficiently connected to that inference?
Does Rule 403 nevertheless require exclusion?
Would a limiting instruction be appropriate?
The central task is to separate legitimate reasoning from disguised propensity reasoning.
Suppose the prosecution offers evidence of an earlier dispute between the defendant and the alleged victim.
If the prosecution argues, “The defendant behaved badly before, so the defendant probably committed this offense,” the reasoning is propensity-based.
If the earlier dispute instead helps explain a specific motive for the charged conduct, the inference may be different:
Earlier dispute → specific reason for hostility → motive relating to charged event.
The label “motive” is useful only if the facts genuinely support that chain.
Other-act evidence offered to prove identity requires particularly careful analysis.
Ordinary similarity may not be enough. If two acts are similar only because both are common examples of the same general offense, the evidence may simply invite the jury to reason from propensity.
Distinctive similarity is more probative of identity.
Suppose several robberies involve a perpetrator who leaves an origami crane containing the same unusual coded message. That combination of features may be sufficiently unusual to support an inference that the same person committed the acts.
The reasoning is not simply:
The defendant robbed before, so the defendant probably robbed again.
Instead, the distinctive method may connect the acts in a way that bears specifically on identity.
When identity is the asserted Rule 404(b) purpose, ask what makes the acts distinctive. Generic similarity may conceal propensity reasoning. An unusual signature method provides a stronger nonpropensity connection.
Prior similar conduct may also bear on intent, knowledge, or absence of mistake.
Suppose a defendant claims that a prohibited chemical was accidentally mixed into a product. Evidence of previous deliberate use of the same chemical may be relevant to whether the present use was truly accidental, assuming the earlier conduct is sufficiently connected to the disputed issue.
The inferential chain may be:
Prior deliberate use under sufficiently related circumstances → increased probability of knowledge or intentional use → decreased probability of accident or mistake.
Again, the analysis must do more than attach the phrase “absence of mistake.”
The connection must be explained.
Rule 403 also remains important. Evidence that satisfies a legitimate Rule 404(b) purpose may still create a serious danger that the jury will use it for the forbidden propensity inference.
A limiting instruction may therefore be relevant.
Rule 404(b) does not replace Rule 403.
Even when other-act evidence serves a genuine nonpropensity purpose, the court must still consider whether its probative value is substantially outweighed by dangers such as unfair prejudice, confusion, or misleading the jury.
Other-act evidence is especially sensitive because the jury may be tempted to use it for exactly the reasoning Rule 404 seeks to prevent.
A limiting instruction can tell the jury to consider the evidence only for the proper purpose, such as identity, intent, or absence of mistake, and not to use it simply to conclude that the defendant is a bad person who probably acted consistently with bad character.
Habit is different from character.
Character describes a generalized disposition such as being careful, violent, or honest.
Habit concerns a more specific and repeated response to a particular situation.
Examples include a person who always fastens a seat belt immediately after entering a vehicle or an employee who always verifies identification before releasing controlled medication.
Habit evidence may be used to prove conduct consistent with the habit.
The distinction between character and habit depends heavily on specificity and regularity.
Ask:
How specific is the situation?
How regular is the response?
How automatic is the behavior?
How numerous are the examples?
“D is a careful driver” describes character.
“Every time D approaches the railroad crossing, D stops beside the white post” is much more specific and may qualify as habit.
A witness testifies that a pharmacist is “extremely cautious.”
That description sounds like general character.
Now assume coworkers testify that every time the pharmacist fills a prescription for a controlled medication, the pharmacist checks the patient’s identification against two separate records before releasing the medication.
The second description involves a specific situation and a repeated response. It therefore presents a much stronger habit argument.
Do not equate repetition with habit automatically. Repeated conduct is most persuasive as habit when it reflects a regular, specific response to a recurring situation rather than a broad personality trait.
Rule 407 addresses measures taken after an injury or harm.
Such measures ordinarily cannot be used to prove negligence, culpable conduct, a product defect, or a need for a warning or instruction.
The policy concern is straightforward. The legal system does not want to discourage people or businesses from making conditions safer after an accident.
Suppose a customer falls and the store later installs a handrail. The plaintiff generally may not use the installation simply to argue:
The store installed the handrail afterward, so the store must have been negligent before.
The exclusion does not necessarily mean the later measure lacks relevance. The rule reflects a policy judgment about the use of that relevance.
Subsequent remedial measures may sometimes be admissible for another legitimate purpose.
Possible uses include ownership, control, feasibility of precaution, and impeachment.
But the alternative purpose must actually matter.
A party cannot manufacture a feasibility dispute simply to create a route for introducing the remedial measure.
For Rule 407, first identify the forbidden use. If the evidence is offered to prove negligence, culpable conduct, defect, or need for warning, the rule is implicated. If another purpose is claimed, explain why that purpose is genuinely disputed and why the evidence bears on it.
Rule 408 generally excludes compromise offers and statements made during compromise negotiations concerning a disputed claim when offered to prove the validity, invalidity, or amount of the claim.
The policy is to encourage settlement.
Parties may be less willing to negotiate candidly if every settlement proposal or negotiation statement can later be introduced as proof of liability or damages.
A crucial requirement is the existence of a disputed claim.
Students should identify the chronology:
When did a claim arise?
When did its validity or amount become disputed?
When did compromise negotiations begin?
Ordinary factual admissions made before a dispute exists do not automatically become protected merely because the parties later enter settlement negotiations.
Settlement evidence may sometimes be relevant for another purpose.
Examples may include showing bias or prejudice, negating a contention of undue delay, or proving obstruction.
But the court must guard against disguised uses.
A party cannot simply attach an alternative label to evidence when the real objective remains proving liability, invalidity, or the amount of the claim.
Do not assume that every statement containing words such as “settle,” “pay,” or “offer” falls within Rule 408. Determine whether a claim existed, whether it was disputed, and whether the statement occurred during compromise negotiations concerning that disputed claim.
Rule 409 generally prevents an offer to pay medical, hospital, or similar expenses resulting from an injury from being used to prove liability.
The important distinction is between the offer and accompanying factual statements.
Consider:
“I’m sorry I ran the red light. I will pay your hospital bill.”
The offer to pay the hospital bill is protected from use to prove liability.
The statement “I ran the red light” requires separate analysis. Rule 409 does not automatically exclude that factual statement merely because it accompanied the payment offer.
This distinction is frequently tested because students may incorrectly assume that everything said near an offer of medical payment is excluded.
Certain criminal pleas and plea discussions receive special protection.
Students should recognize restrictions involving withdrawn guilty pleas, pleas of nolo contendere, statements made during specified plea proceedings, and statements made during qualifying plea discussions with prosecuting authority.
The policy is to encourage plea negotiation.
If statements made in protected plea discussions could routinely be used against defendants at trial, defendants might be less willing to engage in candid negotiation.
The rule contains exceptions, but they should be treated narrowly.
The key exam task is first to identify whether the statement arose in the protected plea context rather than assuming that every discussion about resolving a criminal case receives the same treatment.
Evidence that a person was or was not insured against liability generally cannot be used to prove negligence or wrongful conduct.
The concern is that a factfinder may reason improperly from the existence or absence of insurance rather than decide whether the party actually acted negligently or wrongfully.
Insurance evidence may, however, be relevant for another purpose, such as bias, agency, ownership, or control.
Suppose a witness works for the defendant’s liability insurer. The insurance relationship may be relevant to possible bias.
The distinction again depends on purpose.
Evidence of insurance offered to prove “the defendant must have been negligent” presents the forbidden use. Evidence of the insurance relationship offered to explain why a witness may favor one side presents a different inference.
Rule 412 generally restricts evidence concerning an alleged victim’s sexual behavior or sexual predisposition.
The rule applies in civil and criminal sexual-misconduct proceedings, subject to carefully defined exceptions.
Students should focus on the competing concerns identified by the rule:
Relevance.
Privacy.
Prejudice.
Constitutional rights.
Procedural safeguards.
The ordinary relevance question is therefore not enough. Even when evidence arguably changes the probability of a disputed proposition, the rule imposes special restrictions because of the sensitivity and risks associated with sexual-behavior evidence.
A strong analysis should recognize that sexual-misconduct cases require specific rule-based treatment rather than casual application of ordinary character doctrine.
Rules 413 through 415 create special treatment for certain prior sexual-assault or child-molestation evidence in specified criminal and civil proceedings.
These rules are unusual because they can permit reasoning that resembles propensity reasoning in defined contexts.
That makes them an important contrast with the general Rule 404 framework.
Students should not assume that ordinary Rule 404 automatically resolves a problem involving prior sexual assault or child molestation. Instead, they should identify whether the evidence falls within the specific category governed by Rules 413 through 415.
The exact statutory category matters.
Do not apply the general character-propensity prohibition mechanically to every prior sexual-misconduct act. First determine whether the specialized rules apply.
The rules in this chapter appear diverse, but they share a common analytical structure.
Begin with relevance. Ask what the evidence is offered to prove.
Then identify the reason the law may nevertheless restrict the evidence.
For character and other acts, the concern may be improper propensity reasoning.
For habit, the issue is whether the evidence reflects a sufficiently specific and regular response rather than general character.
For subsequent remedial measures, settlements, medical payments, plea discussions, and insurance, the rules restrict particular uses because of policy concerns or the danger of improper reasoning.
For sexual-misconduct evidence, special rules govern because relevance interacts with privacy, prejudice, constitutional considerations, procedural protections, and specific statutory treatment.
Finally, consider whether Rule 403 creates an additional basis for exclusion and whether a limiting instruction is appropriate when evidence is admitted for only a specific purpose.
One of the most effective ways to analyze these rules is to write two short inference chains.
First, identify the forbidden reasoning:
Prior violence → violent character → acted violently now.
Then identify the claimed permissible reasoning:
Prior distinctive act → unusual shared method → identity.
Or:
Later repair → ownership or control, if genuinely disputed.
Or:
Insurance relationship → possible witness bias.
This method forces the analysis to focus on purpose rather than labels.
Character evidence is generally restricted when offered through propensity reasoning: the person has a particular character trait and therefore probably acted consistently with that trait on the occasion at issue.
Character may be treated differently when the trait itself is an element of a claim, charge, or defense.
A criminal defendant may generally introduce evidence of the defendant’s own pertinent character trait, subject to rules governing rebuttal and methods of proof. In appropriate cases, evidence concerning a pertinent trait of the alleged victim may also be admitted. Homicide cases contain a special rule allowing evidence of the victim’s peacefulness in response to evidence that the victim was the first aggressor.
Rule 405 governs methods of proving character. Reputation and opinion may be permitted when character evidence is admissible. Specific instances are more restricted, although they may be used substantively when character itself is an essential element and may arise in cross-examination under the applicable rules.
Rule 404(b) prohibits using another crime, wrong, or act simply to establish bad character and conduct in conformity with that character. Other acts may, however, be relevant to nonpropensity purposes such as motive, opportunity, intent, preparation, plan, knowledge, identity, absence of mistake, or lack of accident. The label is never enough. Students must explain the logical chain.
Identity generally requires sufficiently distinctive similarity. Intent, knowledge, and absence of mistake require a meaningful connection between the earlier act and the disputed proposition. Rule 403 and limiting instructions remain important even when a legitimate Rule 404(b) purpose exists.
Habit under Rule 406 differs from character. Habit involves a specific, regular, often automatic response to a recurring situation and may be used to prove conduct consistent with that habit.
Rule 407 generally prevents subsequent remedial measures from being used to prove negligence, culpable conduct, product defect, or need for warning or instruction, reflecting a policy favoring safety improvements. Such evidence may sometimes be relevant for another purpose, such as ownership, control, feasibility, or impeachment, when genuinely disputed.
Rule 408 protects compromise offers and statements made during negotiations concerning disputed claims when offered to prove the validity, invalidity, or amount of the claim. Students should determine when the claim arose, when it became disputed, and when negotiations began.
Rule 409 protects offers to pay medical expenses from use to prove liability but does not automatically protect accompanying factual statements.
Rule 410 protects specified pleas and qualifying plea discussions in order to encourage plea negotiation.
Rule 411 generally prevents liability-insurance evidence from being used to prove negligence or wrongful conduct, while allowing other legitimate uses such as bias, agency, ownership, or control.
Rule 412 restricts evidence of an alleged victim’s sexual behavior or predisposition in sexual-misconduct proceedings, with attention to relevance, privacy, prejudice, constitutional rights, and procedural safeguards.
Rules 413 through 415 create special treatment for specified prior sexual-assault and child-molestation evidence and therefore must be analyzed according to their particular categories rather than ordinary Rule 404 alone.
The recurring lesson is that relevance is only the beginning. Evidence may logically matter and still be restricted because the legal system distrusts the inference the factfinder might draw or because admitting the evidence would undermine an important policy.