Legal Question in Civil Litigation in Michigan

Re: Witness

It certainly can.

A witness must have the capacity to testify truthfully, and is definitely a matter of challenge through a procedure called voir dire, in which case the witness will not be permitted in front of a jury if the testimony is inherently unreliable for any reason, including mental illness.

However, that's not true for a commitment hearing, because the person's mental capacity or sanity is at the very heart of the matter.

Re: Witness

It depends on the mental illness and whether it effects the testimony, memory, etc. Mentally ill people in general, can testify. However, the mental illness would subject their testimony to challenge. Bill Sten 248-353-9400