Yan, Sijin, Lynne Masel Walters, Zhuoying Wang, and Chia-Chiang Wang. 2018. “Meta-Analysis of the Effectiveness of Philosophy for Children Programs on Students’ Cognitive Outcomes”. Analytic Teaching and Philosophical Praxis 39 (1):13-33. https://journal.viterbo.edu/index.php/atpp/article/view/1160.