The actual PNAS article[1]. Worth a read. [1] http://www.sas.upenn.edu/~duckwort/images/Role%20of%20test%20motivation%20in%20intelligence%20testing.full.pdf ht

The actual PNAS article[1]. Worth a read. [1] http://www.sas.upenn.edu/~duckwort/images/Role%20of%20test%20motivation%20in%20intelligence%20testing.full.pdf http://www.sas.upenn.edu/~duckwort/images/Role%20of%20test%2...