Humphrey N, Barlow A, Wigelsworth M, Lendrum A, Pert K, Joyce C, Stephens E, Wo L, Squires G, Woods K, Calam R, Turner AJ. A cluster randomized controlled trial of the Promoting Alternative Thinking Strategies (PATHS) curriculum. J Sch Psychol. 2016 Oct;58:73-89. doi: 10.1016/j.jsp.2016.07.002