Addressability of Emergent Life Events: Does Assigned Protocol Matter? Vanessa Perez, Karen Guan, Ph.D., and Bruce F. Chorpita, Ph.D. University of California, Los Angeles Emergent life events (ELEs) are unexpected stressors disclosed by clients in therapy sessions. Prior research suggests that most ELEs are addressable (i.e., effectively managed) using strategies from the modular evidence-based treatment, MATCH, which assigns depression, disruptive, anxiety, or conduct protocols to clients. The current study seeks to examine whether addressability differs depending on what type of protocol is used and if the addressability of the ELE predicts the level of treatment used in session in response to the ELE. Data were drawn from 75 ELEs reported by 34 low-income Latino (85%) youth (ages 5–15) seen by 18 therapists in the MATCH community effectiveness trial. Results revealed 55% of all ELEs were identified as addressable by some portions of the assigned protocol, with greater ELE addressability for those assigned to depression or disruptive protocols. Multilevel logistic regression revealed that there was no association between ELE addressability by assigned protocol and whether the provider used treatment strategies to address an ELE in session. Findings suggest that MATCH strategies for depression and disruptive protocols may be used to design solutions to address ELEs. Additionally, although findings suggest strategies can be used to address ELE, it is vital to effectively and explicitly train providers in how to use treatment strategies to specifically address ELEs and thereby enhance the effectiveness of MATCH with highly stressed populations. *Vanessa Perez* University of California, Los Angeles | Class of 2020 Bachelor of Arts, Psychology Applied Developmental Psychology Minor GIV, Infant Development Program <https://www.psych.ucla.edu/centers-programs/infant-development-program> Research Assistant, Child FIRST Lab <https://www.childfirst.ucla.edu> UCLA PROPS Research Scholar