But don’t worry for the defendant who must fight not only a current allegation but also age-old unproven, or even disproved, allegations. The trial judge will give a cautionary instruction which is presumed to wipe all prejudice from the jury’s mind. So in our most recent controlled-study-turned-law-review-article, my coauthor Lawrence White and I tested this claim. In so doing, we found that cautionary instructions are not effective and jurors will use other-acts evidence for impermissible purposes, including the forbidden character inference. To learn more, including some possible approaches to countering other-acts evidence on behalf of your clients, see the pre-publication draft of our article, forthcoming in the Florida Law Review, titled Convictions Based on Character: An Empirical Test of Other-Acts Evidence.