The number of direct support professionals (DSPs) needed to support the increasing numbers of adults diagnosed with autism within the United States continues to grow exponentially. DSPs receive minimal training and often fail to generalize the training they have received, which can directly lead to poor learning outcomes for the adults they serve. The purpose of this study was to develop a generalized training package designed to promote the generalization of an evidence-based practice (i.e., systematic prompting procedures) across various instructional plans, in different domain areas (e.g., personal care, vocational, daily living), environments, and adults. A concurrent multiple probe design across three staff participants working with six adult participants was used to test a two-phase staff training intervention on the generalization of prompting. The training was delivered in two phases. The first phase consisted of the traditional behavioral skills training (BST) package with a single exemplar (plan 1). Although there were improvements from baseline in staff prompting during intervention 1 for the instructional plan taught (plan 1), the DSPs did not generalize to untrained plans 2 and 3 or the generalization plan. Therefore, all participants received the second phase of the intervention, BST incorporated into a general case training package, training plans 1-3. Staff prompting then met criteria for instructional plans 1-3 and generalized to an untrained plan. The secondary dependent variable, adult engagement during their target tasks, showed moderate effects for adult participants on at least one plan, but their improvements were inconsistent across staff and adults. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]