Time to first cigarette Time to first cigarette in the morning as an index of ability to quit smoking: Implications for nicotine dependence Transdisciplinary Tobacco Use Research Center (TTURC) Tobacco Dependence Phenotype Workgroup Timothy B. Baker, Ph.D. 1 , Megan E. Piper, Ph.D. 1 , Danielle E. McCarthy, Ph.D. 2 , Daniel M. Bolt, Ph.D. 1 , Stevens S. Smith, Ph.D. 1 , Su-Young Kim 1 , Suzanne Colby, Ph. D. 3 , David Conti, Ph.D. 4 , Gary A. Giovino, Ph.D. 5 , Dorothy Hatsukami, Ph.D. 6 , Andrew Hyland, Ph.D. 7 , Suchitra Krishnan-Sarin, Ph.D. 8 , Raymond Niaura, Ph.D. 3 , Kenneth A. Perkins, Ph.D. 9 , Benjamin A. Toll, Ph.D. 8 1 University of Wisconsin School of Medicine & Public Health, Center for Tobacco Research and Intervention (Supported by NIH Grants #P50- CA84724-05 and # P50-DA0197-06) 2 Rutgers University (Supported by NIH Grants #P50-CA84724-05 and # P50-DA0197- 06) 3 Brown University (Supported by NIH Grant #P50-CA084719 and NIDA Grant #R01- DA016737) 4 University of Southern California (Supported by NIH Grant #P50-CA084735-06) 5 SUNY at Buffalo, School of Public Health and Health Professions 6 University of Minnesota (Supported by NIH Grant #P50-DA013333) 7 Roswell Park Cancer Institute (Supported by NIH Grant #P50-CA111236) 8 Yale University School of Medicine (Supported by NIH Grants # P50-DA13334, # P50- AA15632, and # K12-DA00167) 9 University of Pittsburgh (Supported by NIH Grant #P50-DA/CA84718) 1