“…Hirt, Melton, McDonald, and Harackiewicz (1996) suggested that positive mood may enhance performance on creativity tasks yet impair performance on tasks requiring more detailed, systematic processing. In support of this distinction, positive mood reliably leads to more creativity in problem solving (e.g., Estrada, Young, & Isen, 1994;Greene & Noice, 1988;Isen, Daubman & Nowicki, 1987;Isen, Johnson, Mertz, & Robinson, 1985), improved integration of available information (e.g., Estrada, Isen, & Young, 1997), and more flexible classification of material (e.g., Isen & Daubman, 1984;Isen, Niedenthal, & Cantor, 1992;Kahn & Isen, 1993). By contrast, in a wide range of tasks requiring more systematic information processing, positive affect results in a simplification of the task and diminished judgmental quality (e.g., Isen & Means, 1983;Sinclair, 1988).…”