Affiliation: | 1. Department of Health Behavior & Health Education, University of Arkansas for Medical Sciences, 4301 W. Markham St., slot 820, Little Rock;2. Department of Applied Health Science, Indiana University, 1025 E. 7th Street, PH 116, Bloomington;3. Microsoft Research, Room 12–170, One Memorial Drive, Cambridge, MA 02142;4. Department of Counseling and Educational Psychology, Indiana University, 201 North Rose Ave., Bloomington |