Although relative age effects in sports have been studied worldwide, the underlying mechanisms are still under debate. This study adds to the existing knowledge by providing a further exploration of the within-year and between-year effects and their possible interaction in an individual skill/technique based sport: table tennis. Data of male and…

Age-classes are a salient feature of modern schooling. Yet how did age-grouping come to prevail in entire school systems? And how was this form of grouping related to educational and pedagogic discussions at the time of its emergence? The article addresses these issues by looking at the historical context within which age classes came to a…

Widespread use of the Internet in 21st century society is not risk-free. This paper studies the comorbidity of some problematic uses of Internet with depression in order to assess their correlation. With that aim, a meta-analysis of 19 samples obtained from 13 different studies (n=33,458) was carried out. The subjects of these studies are…

As the annual number of migrants from sub-Saharan Africa to both the United States and Europe has grown for most years this decade, a Pew Research Center analysis of 2015 U.S. Census Bureau and Eurostat data finds that sub-Saharan immigrants in the U.S. tend to be more highly educated than those living in the United Kingdom, France, Italy and…

In education policy, as in many other policy fields, well-designed policy reforms may fail to get enacted because policymakers may suddenly become confronted with a public backlash against their reform agenda. Thus, understanding the dynamics of public opinion is important in order to be able to assess the chances of successful reform. There is a…