(An emotion that) addresses the need for food and other material resources, and should facilitate the physical and cognitive effort needed to acquire such resources. Anticipatory enthusiasm is experienced in response to cues of imminent reward, and has also been described as “wanting.”
Shiota, M. N., Neufeld, S. L., Yeung, W. H., Moser, S. E., & Perea, E. F. (2011). Feeling good: Autonomic nervous system responding in five positive emotions. Emotion, 11(6), 1368-1378.