Policy evaluation studies, which assess the effect of an intervention, face statistical challenges: in real-world settings treatments are not randomly assigned and the analysis might be complicated by the presence of interference among units. Researchers have started to develop methods that allow to manage spillovers in observational studies;…

A quasi-experimental study with ninth graders evaluated a 1.5-hour hate speech teaching unit in an intervention vs. control group (N = 82) before (T1) and after the intervention (T2). Participants reported frequency of witnessing hate speech (T1), hate speech norm and self-efficacy countering hate speech (T1 and T2), and knowledge concerning hate…

Parasites evoke an array of emotions that subsequently can govern our action as well as our precautionary measures. If parasites are unknown, an important question is how people can be educated about this parasite. Bedbugs are blood-sucking human parasites that (i) stigmatise hosts, (ii) are hardly correctly identified by people in the western…

Mammen is one of the most versatile and unusual artists of her time. She was born Gertrud Johanna Mammen on November 21, 1890 in Berlin, Germany. During the 1920s and 1930s, Mammen created vivid depictions of life in the booming metropolis of Berlin. She portrayed people of all walks of life, but her focus was on the "New Woman" in the…

Directed toward the question of how parents and 15-year-old adolescents cope with the demands of social change occurring during unification in Germany, the comparative investigation of 40 families each in East and West Germany examines macro-social conditions of family relationships and rightist attitudes among German adolescents and adults. The…