Later the ancient Egyptians wore copper jewelry as a status symbol and to ward off evil spirits. Now Tiffany & Co. is trumpeting that, in honor of its 175th anniversary, modern-day alchemists have made a new precious metal to adorn the wrists, fingers and necks of its wealthy clientele.
Wilhelm Wundt opens first experimental laboratory in psychology at the University of Leipzig, Germany. Credited with establishing psychology as an academic discipline, Wundt's students include Emil Kraepelin, James McKeen Cattell, and G. Stanley Hall.
Gordon Allport is widely recognized as the founder of academic personality psychology, and his perspectives on the trait concept continue to be influential today. Following Allport, many contemporary trait psychologists theorize that traits are rooted in biological processes but shaped by life experiences.