„… cross-sectional study (The European Youth Heart Study). Lancet, 368, 299-304. Aßhauer, M. & Hanewinkel, R. (2000 …” „… children? Pedagogical aspects of motor giftedness. In R. Fisher & R. Bailey (Hrsg.), Talent identification …” „… ), 370-379. Literatur 161 California Task Force to Promote Self-esteem and Personal and Social …”

„… School and PE development Cross-sectional Longitudinal Quasi-experimental Experimental Quantitative …” „… majority of the empirical studies were cross-sectional (n=64) and only few longitudinal studies could be …” „… leisure time Miscellaneous Cross-sectional Longitudinal Quasi-experimental Experimental Quantitative …”

„… adolescents in Germany did not decrease within the observational period. In addition, the cross-sectional and …” „… cross-sectional study and can therefore only be interpreted to a limited extent as significant. How students from …” „… cross-sectional study by Rudolf, Schaller, Frick, Grieben and Froböse (2016). They were able to show that the …”

„… system) in all three countries. Cross-national differences are consistent (US smallest inequality, France …” „… , cross-national comparison, and research methodology are also identified.“ Görzig, Anke; Olafsson, Kjartan: What …” „… were compared directly in one sample across twenty-five countries. The role of cross …”