<p>
The UC study is at <a href=“http://cshe.berkeley.edu/sites/default/files/shared/publications/docs/ROPS.GEISER._SAT_6.13.07.pdf[/url]”>http://cshe.berkeley.edu/sites/default/files/shared/publications/docs/ROPS.GEISER._SAT_6.13.07.pdf</a> .</p>
<p>The Duke study is at <a href=“http://public.econ.duke.edu/~psarcidi/grades_4.0.pdf[/url]”>http://public.econ.duke.edu/~psarcidi/grades_4.0.pdf</a> .</p>