Sanjuán, María Del Carmen An easy-to-hard effect after nonreinforced preexposure in a sweetness discrimination. [electronic resource] - Learning & behavior Sep 2014 - 209-14 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1543-4508 Standard No.: 10.3758/s13420-014-0139-9 doi Subjects--Topical Terms: AnimalsAvoidance Learning--physiologyBehavior, Animal--physiologyDiscrimination Learning--physiologyRatsRats, WistarTaste--physiology