Lack of opportunity or physical inability to reliably perceive the
events about which the witness testified,
e.g., a witness’s intoxication
at the time of the event.
Memory problems, either inherent in an event long past or particular
to the witness, including psychiatric history affecting ability to
recall events accurately.
Possible distortions caused by a witness’s poor communication
Bias, interest, prejudice, or other emotional traits that could cause
a witness to testify falsely.
Prior criminal convictions.
Prior acts of misconduct or dishonesty reflecting adversely on
Prior inconsistent statements.
A bad reputation in the community for truth and veracity.