However, misleading information in the real world can come from other sources, for example other witnesses (co-witnesses), when they discuss the details of a crime or accident, following an incident. This is known as post-event discussion.
Another explanation is memory conformity. Gabbert et al. concluded that witnesses often go along with each other, either to win social approval or because they believe the other witnesses are right and they are wrong. Unlike with memory contamination, the actual memory is unchanged.
information is added to a memory after the event has occurred
information that is added may be misleading
the accuracy of the witness'srecall may be reduced
false memories can be stimulated by misleadingpost-event discussion