这项研究涵盖了参加“目标追踪计划”项目的学校中的386名幼儿园学童，该项目是一个美国的多点临床试验项目，从1991年开始追踪儿童一生的发展情况。
The study included 386 kindergarteners from schools in the Fast Track Project, a multi-site clinical trial in the U. S. that in 1991 began tracking how children developed across their lives.
弗雷泽和莫斯蒂勒断言，医学研究可以通过向更大、更简单的医疗临床试验的方向发展而得到改进。
Frazier and Mosteller assert that medical research could be improved by a move toward larger, simpler clinical trials of medical treatments.
这10个应用都活的好好的，有2个在蓬勃发展，一些在试验中，少数仍在寻找自己的方式。
All of them are still alive and well - a couple are thriving, some are experimenting and a few are still finding their way.
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