Let’s begin with the fact that, skills are not skills without this emotion. And there is no motivation without interest. Are memory and attention important? Of course. So, interest has significance for them that is difficult to overestimate. And how strong we are attracted by the unknown! Interest in it is the basis of research and cognition. It is impossible to exaggerate the role of this emotion in our evolution.
Many of us have an interest in something for a long time. If you do, then you are no longer have an emotion, but the feeling. Assessing emotions of another person, you should distinguish between short-term and long-term interest. C. Izard calls the short-term manifestation of interest a reaction of being interested. In addition, Izard points out that interest is experienced more often than any other emotion. Starting to learn the ABC of emotions, we clearly distinguish all 27 emotions from the effectiveness. Interest is always, whatever it is directed on, has a positive effect on the effectiveness. The combination of interest with other emotions gives an astonishing result. What interest can there be if the work is monotonous and boring? So that’s why there is interest, to do this work. Our efficiency depends on ... interest. And there is no need to mention people of creative professions.