The New York Times reports: "Educators and policy makers, including Secretary of Education Arne Duncan, have said in recent days that they hope President Obama’s example as a model student could inspire millions of American students, especially blacks, to higher academic performance.

Now researchers have documented what they call an Obama effect, showing that a performance gap between African-Americans and whites on a 20-question test administered before Mr. Obama’s nomination all but disappeared when the exam was administered after his acceptance speech and again after the presidential election."