Individual differences in emotional reactions to bistable perception.

Bistable images - which have two competing perceptual interpretations - have long been used in the scientific study of consciousness. Here we applied a different lens and investigated emotional reactions to them. Method Participants were adult humans in a cross-sectional study. Participants were presented with three bistable images and rated their emotional reactions to experiencing bistability. They also completed measures of intolerance of uncertainty, cognitive empathy, affective empathy, and negative affect. Results There were marked individual differences in these reactions, ranging from feeling highly negative to highly positive. These individual differences in emotional response to bistability were linked to a number of psychological processes: intolerance of uncertainty, cognitive empathy, and negative affect, but not affective empathy. Conclusions These finding have important implications because: (a) these emotional reactions could distort scientific investigations that use these stimuli to study non-emotional perceptual and cognitive processes; and (b) they highlight that this approach offers a useful window into how individuals react to these stimuli that demonstrate that there is not always a single viable interpretation of the world around us.