The role of induced set in figural after-effects

Abstract

Naive Ss do not report figural after-effects (FAE) reliably. Many experiments on FAE have used Ss who were aware of the expected outcomes. It is demonstrated that pseudo-FAEs can be induced readily in naive Ss, with appropriate set-inducing instructions, and the pseudoeffects can be obtained equally in the classically expected direction or in the opposite direction. Suggestible Ss tend to show greater pseudo-FAEs than non-suggestibles in some situations.