A procedure for generating differential "sample" responding without different exteroceptive stimuli

Karen M Lionello-DeNolf, Peter J Urcuioli
2003 Journal of The Experimental Analysis of Behavior  
doi:10.1901/jeab.2003.79-21 pmid:12696739 pmcid:PMC1284919 fatcat:hqd56uavq5fi3lu3xlk3qh3ov4