Broadly, non-cognitive responses to things and situations—the individual and organizational response to uncertainty is often instinctive, visceral, and emotional avoidance or fear. But emotion is also the basis of surprise and delight, which can be quite nice and is always the product of uncertainty.
See also: ambient uncertainty, comfort, delusion, design, desperation by design, discomfort, failure, forcing function, motivation, negative capability, not-knowing, open-endedness, product, productive discomfort, voluntary uncertainty.