Effects of acute stress on divergent and convergent problem-solving

This study examined the effects of acute stress on creative problem-solving. Thirty-five male participants underwent stress induction via the Trier Social Stress Test; another 35 male participants engaged in a comparable, but less stressful, control task. Subsequently, they all took the Alternative Uses Test (AUT) and the Remote Associates Test (RAT), both of which are standard creative problem-solving tasks. Heart rate (HR) and salivary cortisol were recorded at regular intervals. Compared to controls, stressed participants responded with higher HR and salivary cortisol and reported more negative affect. A comparison of the effects of acute stress on two forms of creative problem-solving tasks, convergent and divergent problem-solving, showed stress-related reductions in the flexibility of solving. These effects were manifested according to the nature of the tasks: in convergent solving, stress induced faster, but less accurate responding; in divergent solving, stress reduced the flexibility of solution production, resulting in less variety of solutions.