Authors: Barton F Haynes; Judith Fleming; E William St Clair; Herman Katinger; Gabriela Stiegler; Renate Kunert; James Robinson; Richard M Scearce; Kelly Plonk; Herman F Staats; Thomas L Ortel; Hua-Xin Liao; S Munir Alam Journal: Science Date: 2005-04-28 Impact factor: 47.728