My primary research interests concern the structure of affect. Whereas affective processes have traditionally been characterized as falling along a single bipolar dimension, my research has examined the separability of positive and negative affect.
For example, my colleagues and I have demonstrated that in certain emotionally complex situations, people can feel happy and sad at the same time. Our research has also examined mixed emotional reactions to gamble outcomes. For example, we have examined how people can feel both good and bad about winning some amount of money when they could have won an even larger amount, an event we term a disappointing win.
Additional interests include affective influences on motor behavior, context effects on affective reactions, the role of effortful and controlled processes in affect, and psychophysiological indices of affect (e.g., event-related potentials, facial electromyography).