Three hundred venirepersons from the 12th Judicial Circuit in Florida completed a booklet of stimulus materials that contained the following: one question that specified participants' level of support for the death penalty; one Witt death-qualification question; a case scenario that included a summary of the guilt and penalty phases of a capital case; verdict and sentencing preferences; a 16-item measure that required participants to rate their receptiveness to the insanity defense on a 6-point Likert scale; and standard demographic questions. Results indicated that death-qualified venirepersons, when compared to excludables, were more likely to endorse certain insanity myths, find the defendant guilty, and sentence the defendant to death. Legal implications are discussed.