Brian Ross; 'A Serious Man'; Alison Gopnik

Brian Ross, chief investigative correspondent, ABC News, describes the sequence of events in the days before the FBI arrested Bernie Madoff, from his book, "The Madoff Chronicles: Inside the Secret World of Bernie and Ruth." Filmmakers Joel and Ethan Coen and actors Richard Kind and Michael Stuhlbarg describe the plot and major themes of their film, "A Serious Man." Alison Gopnik shares what she learned about the cognitive development of infants and toddlers while researching her book, "The Philosophical Baby."