“…The RFT approach is a modern behavioral account of human language and cognition that has proved able to tackle questions long thought to be out of reach of the behavior-analytic approach. RFT has made a multitude of advances in the behavioral understanding of such areas of cognition as analogical reasoning (Carpenter, Smeets & Barnes-Holmes, 2003;Stewart & Barnes-Holmes 2004;Stewart, Barnes-Holmes & Weil, 2009), assessment and training of intellectual skills (e.g., Cassidy, Roche & Hayes, 2011;O'Toole & Barnes-Holmes, 2009), in applied developmental and clinical arenas (McHugh, Barnes-Holmes & Rehfeldt, Dillen, Ziomek & Kowalchuck, 2007;Villatte, Monestes, McHugh, Freixa i Baque & Loas, 2010a, 2010bWeil, Hayes & Capurro, 2011) and generative verbal behavior in developmentally delayed children (e.g., Heagle & Rehfeldt, 2006;Moran, Stewart, McElwee & Ming, 2010;Murphy & Barnes-Holmes 2009). In addition to its success in these areas, the authors believe that RFT can be a powerful explanatory tool for researchers interested in implicit attitudes.…”