A death-row inmate is entitled to a new sentencing proceeding because his trial lawyer failed to investigate and present evidence of childhood abuse and its link to learning and behavioral problems, the U.S. Court of Appeals for the Third Circuit held.

Seifullah Abdul-Salaam Jr. is entitled to habeas corpus relief, the court held in a July 12 opinion by Judge Michael A. Chagares.

The state court unreasonably applied federal constitutional law when it held that trial counsel made a reasonable...