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randomized to receive a new preschool and parent education program focused on cognitive and non-cognitive skills (CogX) or to a … control group that did not receive preschool education. In addition to a typical academic year (9 month) program, we also … Kindergarten. Both programs, including the shortened version, significantly improved cognitive test scores by about one quarter of …
Persistent link: https://www.econbiz.de/10012482133
The Ku Klux Klan reached its heyday in the mid-1920s, claiming millions of members. In this paper, we analyze the 1920s Klan, those who joined it, and the social and political impact that it had. We utilize a wide range of newly discovered data sources including information from Klan membership...
Persistent link: https://www.econbiz.de/10012465234