Problem solving in the rat: Stay vs. shift solutions on the three-table task

Two experiments were conducted to determine the conditions under which a shift problem vs. a stay problem would be easier for animals tested on Maier’s three-table task. When animals were given a prior exploratory experience and a partial feeding during the feeding experience, the stay problem was easier. With a prior exploratory experience and a complete feeding experience, the shift solution was easier. In the absence of prior exploration, rats cannot solve either the stay or shift problem, regardless of the amount of feeding during the feeding experience.