1. Department of Psychology and Neuroscience, University of Colorado, Boulder, Colorado 80309;
2. Department of Psychology, Arizona State University, Tempe, Arizona 85287;
3. Department of Psychology, University of Washington, Seattle, Washington 98195;
4. Department of Psychiatry, University of California, San Francisco, and San Francisco General Hospital, San Francisco, California 94110;
5. Oregon Research Institute, Eugene, Oregon 97403;