Character, Reputation and Habit

Two rules sit next to each other and appear to contradict. Evidence that a person is careless is excluded when offered to show they were careless on the day in question; evidence that a person always locks a particular door is admitted to show they locked it. The difference is real and it is worth understanding precisely.

Why character evidence is excluded

The reasoning it invites is weak. That a person of a given disposition acted in accordance with it on one occasion is a poor inference, because conduct varies enormously with circumstance.

And it is prejudicial. A decision-maker who learns that somebody has behaved badly before may decide the case on that rather than on the evidence about the occasion in question.

It also lengthens everything. Each piece of character evidence invites rebuttal, and the proceeding quietly acquires a second contest about the person's history that has nothing to do with the events in issue.

The exclusion is about the use, not the fact. The same evidence may be admissible for another purpose, such as motive or knowledge, which is a distinction that generates a great deal of argument.

Defined exceptions exist. They differ between civil and criminal settings, and they are narrower than the general impression of them suggests.

What habit actually means

A specific response to a specific situation. Not a tendency, and not a general trait. Habit is what a person does every time a particular circumstance arises, without deliberating about it.

Regularity is the test. Occasional or usual is not enough. What is required is an invariable or near-invariable response established over a sufficient number of occasions.

It has to be described concretely. A witness saying that somebody was careful is giving character evidence; a witness saying that they checked a particular gauge before every start is describing a habit.

Volition drops out. The reason habit evidence is persuasive is that habitual acts are performed without thought, so the actor's intentions on the day do not affect them.

Corroboration is not required in most systems. Evidence from somebody who observed the habit over a long period is nonetheless considerably stronger than the actor's own description of what they always did, for reasons set out in recollection and reconstruction.

Routine practice of an organization

Easier to establish than personal habit. Organizations document their procedures, train people in them, and audit compliance, so the evidence of the practice exists independently of anybody's memory.

It proves what happened to a particular file. Where a procedure was invariably followed, evidence of the procedure establishes that it was followed in the instance nobody now remembers.

The witness has to know the system. Somebody who can describe how the process worked, from personal knowledge of operating it, rather than somebody reading a manual afterward.

Departures matter. Evidence that the procedure was sometimes not followed undermines the entire route, which is why compliance records and audit results are as important to this argument as the written procedure itself.

It supports missing records. This is the mechanism behind much of proving that a record once existed, where the file is gone but the practice that created it can be described.

Character of a witness, which is a different rule

Truthfulness is a permitted subject. A witness's character for truthfulness may be attacked, and once attacked, supported, which is a separate regime from character evidence about conduct.

The form is limited. Reputation or opinion evidence about truthfulness, rather than accounts of specific incidents, subject to defined exceptions for questioning.

Specific conduct on cross-examination. In many systems a witness may be asked about specific instances bearing on truthfulness, with the questioner bound by the answer.

Convictions have their own rules. Admissibility depends on the nature of the offense, its age and the balance between its value and its prejudice.

It is often not worth pursuing. Attacking a witness's general truthfulness is less effective than demonstrating a specific inconsistency, as how prior statements are used sets out.

Using the distinction in practice

Describe conduct, not disposition. Evidence framed as what a person did on every occasion of a kind is admissible; the same material framed as what sort of person they are is not.

Establish the number of occasions. Habit requires regularity, and a witness who can say how many times they observed the behavior is establishing the foundation the rule requires.

Prefer organizational practice. Where a system rather than a person is the source of the routine, the evidence is documented, checkable and far harder to answer.

Anticipate the objection. Framing the evidence correctly from the outset avoids an argument that is difficult to recover from once the material has been characterized as propensity.

Do not overreach. Offering a general disposition as habit invites exclusion of the whole line, including the parts that would have been admissible.

The apparent inconsistency between these rules disappears once the reason is clear. The objection is to reasoning from what somebody is like to what they did, and habit evidence does not require that reasoning at all, because it describes an automatic act rather than a disposition.

For anybody assembling evidence, the practical instruction is to press witnesses for specifics. A statement that somebody was reliable is worth nothing; a statement that they filed every report on the day of the visit, over four years, is worth a great deal.

Organizational routine practice is the most useful version of this and the most underused. It converts an absence of records into positive evidence about what was done, and the material establishing it usually already exists in training documents and audits.

The rules about a witness's character for truthfulness are a separate subject that people frequently conflate with this one. They permit a narrow attack, in a defined form, and they are usually less effective than simply demonstrating that the witness said something different before.

Above all, the framing of the evidence decides its admissibility. The same facts, described as conduct rather than as character, cross a line that a great deal of argument in this area is spent on either side of.