Recent research has demonstrated that inexperienced staff accurately implemented paired stimulus (Fisher et al., 1992) and multiple stimulus without replacement (DeLeon & Iwata, 1996) preference assessments when provided with enhanced written instructions (Graff & Karsten, 2012b; Shapiro, Kazemi, Pogosiana, Rios, & Mendoza, 2016). Providing inexperienced staff with antecedent-only training packages is a viable alternative to expert facilitated training, which may not be available in all settings. In this study, four inexperienced staff successfully learned to conduct competing items preference assessments using an antecedent-only training package. Results of this study were presented at the BABAT 2016 conference. The manuscript is being prepared to submit for publication.