The plaintiffs brought a mid-trial motion to disqualify the defendants' proposed expert witness, Dr. Vernon Quinsey, arguing he lacked the requisite independence and objectivity.
Dr. Quinsey was previously employed as a staff psychologist and Director of Research at the very psychiatric facility whose programs were being challenged as unethical human experimentation.
The court found that Dr. Quinsey's integral role in evaluating the contentious programs during the relevant period created a serious doubt as to his objectivity.
The court concluded that the prejudicial effect of his evidence outweighed its probative value, and disqualified him from testifying as an expert, though permitting him to testify as a fact witness.