In a series of experiments that looked at the effects of noise on creative thinking, researchers at the University of Illinois at Urbana-Champaign had participants brainstorm ideas for new products while they were exposed to varying levels of background noise. Their results, published in The Journal of Consumer Research, found that a level of ambient noise typical of a bustling coffee shop or a television playing in a living room, about 70 decibels, enhanced performance compared with the relative quiet of 50 decibels.