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https://www.wsj.com/articles/SB118660878464892191
Mr. Rolnick and a colleague crunched the data, calculating that for every $1 invested in preschool, there was a $16 return from lower crime, fewer welfare payments and higher earnings.
The magnitude surprised everyone. Mr. Rolnick asked economist James Heckman, a Nobel laureate at the University of Chicago, to check the work. The results matched Mr. Rolnick's.
Among those intrigued was Robert Dugger, a former Democratic staffer on Capitol Hill. He was working at the hedge fund Tudor Investment Corp. as a political and global-risk analyst. Using his own money -- $250,000 so far -- Mr. Dugger started his own think tank and commissioned a paper by Mr. Heckman.
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