Affect (Psychology) (Topical Term)

Mosby's medical dictionary, 2013 (Affect: an outward, observable manifestation of a person's expressed feelings or emotions, such as flat, blunted, bland, or bright)

Psychiatry & Behavior Sciences Clerkship (Univ. of Washington School of Medicine) web site, viewed March 23, 2018 (Affect: An immediately expressed and observed emotion. A feeling state becomes an affect when it is observable, for example, as overall demeanor or tone and modulation of voice. Affect is to be distinguished from mood, which refers to a pervasive and sustained emotion. Common examples of affect are euphoria, anger, and sadness.)