[1] Columbia Univ, Ctr Sci & Soc, New York, NY 10027 USA
[2] Rockefeller Univ, Lab Neurogenet Language, New York, NY 10065 USA
[3] Howard Hughes Med Inst, Chevy Chase, MD 20815 USA
[4] Univ Penn, Dept Linguist, Philadelphia, PA 19104 USA
[5] CUNY Hunter Coll, Dept Psychol, New York, NY 10065 USA