搜索结果: 1-2 共查到“劳动科学 drugs”相关记录2条 . 查询时间(0.066 秒)
School and Drugs: Closing the Gap – Evidence from a Randomized Trial in the US
mentoring programs peer effects risky behaviors educational programs randomized trials
2012/10/23
We present evidence on how The Quantum Opportunity Program (QOP hereafter) worked in the US. While the program was regarded as successful in the short-term, in the long-run its educational results wer...
Since 1964, employment in drugs manufacturing has grown through recessions and structural changes to the economy, while the industry has continued to make profits, invest in research and development, ...