New and Online! Encyclopedia of Social Psychology
The Libraries just secured online access to the Encyclopedia of Social Psychology.
From the introduction, "Social psychology is the study of how normal people think, feel, and act. In that sense, social psychology is at the core of all the fields that study the human experience. As one colleague (not a social psychologist) remarked to us once, social psychology is one, and perhaps the only, field that can communicate with every other department in the university."
Notable contributors include two Washington University professors - Dr. Larsen and Dr. Strube and their entries on the Independence of Positive & Negative Affect and Personalities & Behavior Patterns, Type A and Type B.
You can also find this resource listed on the Psychology Research Guide, along with many other online reference works.