1. Department of Psychology Brigham Young University Provo Utah 84602 USA
2. Section of Comparative Behavioral Genomics National Institute on Alcohol Abuse and Alcoholism, NIH Rockville Maryland 20852 USA
3. Laboratory of Clinical Studies National Institute on Alcohol Abuse and Alcoholism, NIH Bethesda Maryland 20892 USA
4. Section of Comparative Ethology Eunice Shriver Kennedy National Institute of Child Health and Human Development, NIH Poolesville Maryland 20837 USA