Uncertainty and preference for ‘ambiguous’ figures, ‘impossible’ figures and the drawings of M. C. Escher1

With regard to two kinds of dependent response measures, number of one s exposures and verbal ratings of interestingness and pleasingness, preference was greater for unaltered ‘ambiguous’ figures, drawings of M. C. Escher and ‘impossible’ figures, characterized by greater complexity and uncertainty, than for altered versions of these stimuli. Furthermore, preference increased over the three types of unaltered slides while remaining fairly constant across altered ones. Lastly, number of exposures and ratings of interestingness diminished for unaltered pictures when preceded by their altered versions. The findings were interpreted using Berlyne's notions regarding aesthetic preference, uncertainty, and response conflict.