Barack Obama, Anne Treisman

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Photo - <p>President Barack Obama awards the National Medal of Science to Dr. Anne Treisman of Princeton University, Friday, Feb. 1, 2013, during a ceremony in the East Room of the White House in Washington. The awards are the highest honors bestowed by the United States Government upon scientists, engineers, and inventors. (AP Photo/Charles Dharapak)</p>

President Barack Obama awards the National Medal of Science to Dr. Anne Treisman of Princeton University, Friday, Feb. 1, 2013, during a ceremony in the East Room of the White House in Washington. The awards are the highest honors bestowed by the United States Government upon scientists, engineers, and inventors. (AP Photo/Charles Dharapak)

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President Barack Obama awards the National Medal of Science to Dr. Anne Treisman of Princeton University, Friday, Feb. 1, 2013, during a ceremony in the East Room of the White House in Washington. The awards are the highest honors bestowed by the United States Government upon scientists, engineers, and inventors. (AP Photo/Charles Dharapak)

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