The Positive and Negative Affect Schedule (PANAS) is a self-report measure made up of two mood scales, one measuring positive affect and the other measuring negative affect.
Construct Definition (and Source):
Those affective states which can be experienced and have arousing and motivational properties. (MeSH)
Watson, D., Clark, L. A., & Tellegen, A. (1988). Development and validation of brief measures of positive and negative affect: The PANAS scales. Journal of Personality and Social Psychology, 54(6), 1063–1070. https://doi.org/10.1037/0022-35220.127.116.113