Positive valence corresponds to the "goodness" or attractiveness of an object, event, or situation, making it appealing or desirable.
This concept is not only used to describe the intrinsic qualities of objects and events but also categorizes emotions based on their inherent attractiveness or averseness.
The term chemical valence has been used in physics and chemistry to describe the mechanism by which atoms bind to one another since the nineteenth century.
The perceived emotional valence of a facial expression is represented in the right posterior superior temporal sulcus and medial prefrontal cortex.
[7] The term is also used to describe the hedonic tone of feelings, certain behaviors (for example, approach and avoidance), goal attainment or non-attainment, and conformity with or violation of norms.