title: [Internal validity of polarity profiles: studies on Ertel's standard polarity profile].
mesh_terms: D000293:Adolescent; D000328:Adult; D000329:Advertising; D006801:Humans; D007406:Interview, Psychological; D008297:Male; D011639:Public Opinion; D012659:Semantic Differential
vernacular_title: Zur internen ValiditHat von Polaritätsprofilen: Untersuchungen zum Standard-Polaritätsprofil von Ertel.