Although several ethical decision-making methods exist, there is a dearth of research evaluating their use and effectiveness. This study examined graduate student papers by both art therapy and counseling students that applied either the DO ART model (developed for art therapists) or the ABCDE worksheet (for general mental health usage) to case vignettes that were rated on several ethical decision-making criteria: obligations, moral ideals, consequences, and bias. Results suggest the DO ART model is as effective as the ABCDE worksheet; art therapists are as effective as other practitioners in the use of ethical decision-making models.