Among Obama Advisers, Scholars' Roles Shift With Policy Landscape

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Courtesy Jeffrey B. Liebman

Jeffrey B. Liebman is professor of public policy at Harvard and an adviser to the Obama campaign on economic policy.

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Courtesy Jeffrey B. Liebman

Jeffrey B. Liebman is professor of public policy at Harvard and an adviser to the Obama campaign on economic policy.

When Janine A. Davidson left her Pentagon position as deputy assistant secretary of defense for plans to return to the college classroom this year, she didn't step completely out of the political sphere.

Ms. Davidson, an assistant professor of national security and public policy at George Mason University, is one of a group of academics advising President Obama's re-election campaign in a range of formal and informal ways. They join a slew of advisers from the government, the