When such evaluative terms were added back into lexical studies, two new factors emerged, Positive Valence and Negative Valence (the “Big 7” model; Waller & Zavala, 1993; note: these traits should not be confused with Positive and Negative Emotionality). The presence of these new factors indicates that terms considered dark, such as “evil,” are not only potentially important domains of personality but are also not simply extreme indicators of Big Five dimensions (i.e., Negative Valence is not “very disagreeable”).