It`a too bad and unscholarly to release “report” of a “study” without giving the actual source for the report and the source html info for the “study”. This is appears to be a dead-end source so far as any reference to the original Harvard article/study is nowhere to be found on their website. http://www.harvard-jlpp.com
http://www.harvard-jlpp.com/archive/
and there is no searchbox so you can`t find anything even if you tried to.
HELP!!