In the case of multiple manuscripts that report on one study, the WWC selects one manuscript as the primary citation and lists other manuscripts that describe the study as additional sources.
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Washburn, I. J., Acock, A., Vuchinich, S., Snyder, F., Li, K. K., Ji, P., Day, J., DuBois, D., & Flay, B. R. (2011). Effects of a social-emotional and character development program on the trajectory of behaviors associated with social-emotional and character development: Findings from three randomized trials. [Study 2: Chicago Schools]. Prevention Science, 12(3), 314–323. https://doi.org/10.1007/s11121-011-0230-9.
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Flay, Brian R. (2014). Replication of Effects of the "Positive Action" Program in Randomized Trials in Hawai'i and Chicago Schools. [Study 2: Chicago Schools]. Society for Research on Educational Effectiveness.
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Duncan, R. J., Rolan, E., Marceau, K., Lewis, K. M., Bavarian, N., DuBois, D. L., & Flay, B. (2019). Childhood protective factors and a prevention program reduce later problem behaviors. Journal of Applied Developmental Psychology, 65. https://doi.org/10.1016/j.appdev.2019.101063.
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Bickman, Leonard; Riemer, Manuel; Brown, Joshua L.; Jones, Stephanie M.; Flay, Brian R.; Li, Kin-Kit; DuBois, David; Pelham, William, Jr.; Massetti, Greta. (2009). Approaches to Measuring Implementation Fidelity in School-Based Program Evaluations. Journal of Research in Character Education, v7 n2 p75-101.
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Lewis, K. M., Bavarian, N., Snyder, F. J., Acock, A., Day, J., Dubois, D. L., Ji, P., Schure, M. B., Silverthorn, N., Vuchinich, S., & Flay, B. R. (2012). Direct and mediated effects of a social-emotional and character development program on adolescent substance use. The International Journal of Emotional Education, 4(1), 56–78. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3845413/.
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Silverthorn, Naida; DuBois, David L.; Lewis, Kendra M.; Reed, Amanda; Bavarian, Niloofar; Day, Joseph; Ji, Peter; Acock, Alan C.; Vuchinich, Samuel; Flay, Brian R. (2017). Effects of a School-Based Social-Emotional and Character Development Program on Self-Esteem Levels and Processes: a Cluster-Randomized Controlled Trial. SAGE Open, v7 n3.
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Lewis, Kendra M.; Vuchinich, Samuel; Ji, Peter; DuBois, David L.; Acock, Alan; Bavarian, Niloofar; Day, Joseph; Silverthorn, Naida; Flay, Brian R. (2016). Effects of the "Positive Action" Program on Indicators of Positive Youth Development among Urban Youth. Applied Developmental Science, v20 n1 p16-28.
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Lewis, K., M., DuBois, D., L., Bavarian, N., Acock, A., Silverthorn, N., Day, J., Ji, P., Vuchinich, S., & Flay, B., R. (2013). Effects of Positive Action on the emotional health of urban youth: A cluster-randomized trial. Journal of Adolescent Health, 53(6), 706–711. https://pubmed.ncbi.nlm.nih.gov/23890774/.
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Lewis, K. M., Schure, M. B., Bavarian, N., DuBois, D. L., Day, J., Ji, P., Silverthorn, N., Acock, A., Vuchinich, S., & Flay, B. R. (2013). Problem behavior and urban, low-income youth: A randomized controlled trial of positive action in Chicago. American Journal of Preventive Medicine, 44(6), 622–30. https://pubmed.ncbi.nlm.nih.gov/23683980/.
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Haegerich, T. M. & Metz, E. (2009). The social and character development research program: Development, goals, and opportunities. Journal of Research in Character Education, 7(2), 1–20. https://psycnet.apa.org/record/2011-19986-001.
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Li, K. K., Washburn, I., DuBois, D. L., Vuchinich, S., Ji, P., Brechling, V., Day, J., Beets, M. W., Acock, A. C., Berbaum, M., Snyder, F., & Flay, B. R. (2011). Effects of the Positive Action program on problem behaviors in elementary school students: A matched-pair randomized control trial in Chicago. Psychology and Health, 26(2), 187–204. https://pubmed.ncbi.nlm.nih.gov/21318929/.
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Day, J., Ji, P., DuBois, D. L., Silverthorn, N., & Flay, B. (2016). Cumulative social-environmental adversity exposure as predictor of psychological distress and risk behavior in urban youth. Child and Adolescent Social Work Journal, 33(3), 219–235. https://link.springer.com/article/10.1007/s10560-015-0421-5.
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Bavarian, N., Lewis, K. M., Acock, A., DuBois, D. L., Yan, Z., Vuchinich, S., Silverthorn, N., Day, J., & Flay, B. R. (2016). Effects of a school-based social-emotional and character development program on health behaviors: A matched-pair, cluster-randomized controlled trial. The Journal of Primary Prevention, 37, 87–105. https://doi.org/10.1007/s10935-016-0417-8.
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Bavarian, Niloofar; Lewis, Kendra M.; DuBois, David L.; Acock, Alan; Vuchinich, Samuel; Silverthorn, Naida; Snyder, Frank J.; Day, Joseph; Ji, Peter; Flay, Brian R. (2013). Using Social-Emotional and Character Development to Improve Academic Outcomes: A Matched-Pair, Cluster-Randomized Controlled Trial in Low-Income, Urban Schools. Journal of School Health, v83 n11 p771-779.
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Lewis, K. M. (2012). Evaluation of a social-emotional and character development program: methods and outcomes [Doctoral dissertation, Oregon State University]. Oregon State University. https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/7d278w417.
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Washburn, I. J. (2010). Evaluation of a social-emotional and character development program [Doctoral dissertation, Oregon State University]. [Study 2: Chicago Schools]. Oregon State University. https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/7h149s57c.