As a senior producer on some of network TV's highest-rated news shows, Deborah Leff knew how to illuminate society's problems but felt powerless to eliminate them. A former colleague of hers says, "Debbie felt she could bring issues to exposure, but not closure."

So those in whom Leff confided were not surprised when, a year ago this month, she chucked TV news and assumed the presidency of the Chicago-based Joyce Foundation.

Leff, 41, who was a government civil rights lawyer before becoming a TV journalist, is optimistic she can have an impact on social issues at Joyce.