Quote
"Previous research has shown that negative feedback can lead to increased subsequent effort, as long as the task is not perceived as too difficult to be mastered (Locke & Latham, 1990). This is consistent with research indicating that when individuals experience negative affect in a situation that requires creativity, this negative affect may be interpreted as a signal that additional effort must be exerted for a creative solution to be discovered. In contrast, positive mood coupled with a situation that requires creativity may be an indication that the creative goal has been met, reducing the amount of effort exerted on the task."
