On the wall of economist Adam Posen's Washington office hangs a framed poster of Akira Kurosawa's 1954 film classic, "Seven Samurai."

The memento speaks to Posen's love of Japan, born in his days as a student and since manifested in his career, through books on the nation's economic woes and trips to Tokyo to advise its policy makers.

In a study published in June 2010, he even blended cultural and economic analysis to show what lessons "Seven Samurai" carries for central bankers.