Mood evidently affects the operation of System 1: when we are uncomfortable and unhappy, we lose touch with our intuition.	These findings add to the growing evidence that good mood, intuition, creativity, gullibility, and increased reliance on System 1 form a cluster. At the other pole, sadness, vigilance, suspicion, an analytic approach, and increased effort also go together. A happy mood loosens the control of System 2 over performance: when in a good mood, people become more intuitive and more creative but also less vigilant and more prone to logical errors.
Daniel Kahneman, Thinking, Fast and Slow
creativity, gullibility, mood, rationality