Assessing Symmetry by Comparing the Acquisition of Symmetric and Nonsymmetric Conditional Relations in a Capuchin Monkey - Soares Filho, Paulo Sergio Dillon; Silva, Álvaro J. M. e; Velasco, Saulo Missiaggia; Barros, Romariz da Silva; Tomanari, Gerson Yukio (International Journal of Psychological Research, 2016)