Ageism-Concept and Origins: Liat Ayalon & Clemens Tesch-Römer -- Ageism: The Relationship between Age Stereotypes and Age Discrimination: Peggy Voss & Klaus Rothermund -- Multiple Marginalizations Based on Age: Gendered Ageism and Beyond: Clary Krekula, Pirjo Nikander, & Monika Wilińska --...