1. Ph.D. Student, Dept. of Civil and Environmental Engineering, Univ. of Colorado at Boulder, 1111 Engineering Dr., Boulder, CO 80309-0428.
2. Beavers Associate Professor of Construction Engineering, Dept. of Civil, Environmental, and Architectural Engineering, Univ. of Colorado at Boulder, 1111 Engineering Dr., Boulder, CO 80309-0428.
3. Professor, Dept. of Psychology and Neuroscience, Univ. of Colorado at Boulder, 1111 Engineering Dr., Boulder, CO 80309-0428.
4. Assistant Professor, Dept. of Psychology and Neuroscience, Univ. of Colorado at Boulder, 1111 Engineering Dr., Boulder, CO 80309-0428.
5. Dept. of Psychology, Univ. of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA 02125-3393.