<p>[The</a> Impact of Time Between Cognitive Tasks on Performance: Evidence from Advanced Placement Exams](<a href=“http://papers.nber.org/papers/w18436?utm_campaign=ntw&utm_medium=email&utm_source=ntw]The”>http://papers.nber.org/papers/w18436?utm_campaign=ntw&utm_medium=email&utm_source=ntw)</p>
<p>Ian Fillmore, Devin G. Pope
NBER Working Paper No. 18436
Issued in October 2012</p>
<p>…</p>
<p>We find strong evidence that a shorter amount of
time between exams is associated with lower scores, particularly on
the second exam. Our estimates suggest that students who take exams
with 10 days of separation are 8% more likely to pass both exams than
students who take the same two exams with only 1 day of separation.</p>
<hr>
<p>The primary factors in deciding what AP courses to take should be a student’s interests and abilities, but this article points to the calendar spacing of AP exams as a minor factor.</p>