Emotions associated with thinking and comprehending. These emotions include interest, confusion, and surprise, the most widely studied emotions in this family.
Silvia, P. J. (2009). Looking past pleasure: Anger, confusion, disgust, pride, surprise, and other unusual aesthetic emotions. Psychology of Aesthetics, Creativity, and the Arts, 3(1), 48-51. doi: 0.1037/a0014632.