De la Sancha Villa, E.O., Guzmán-Díaz, G. and Serrano, M. 2015. Effects of varying the spatial position of stimuli in the acquisition and transfer of conditional discrimination in humans. Acta Colombiana de Psicología. 18, 1 (Jan. 2015), 47–54. DOI:https://doi.org/10.14718/ACP.2015.18.1.5.