Developing an Adaptive Mobile Intervention to Address Risky Substance Use Among Adolescents and Emerging Adults: Usability Study

Lara N Coughlin   ^{1, 2} , PhD ;   Inbal Nahum-Shani   ³ , PhD ;   Meredith L Philyaw-Kotov   ¹ , MSc ;   Erin E Bonar   ^{1, 2} , PhD ;   Mashfiqui Rabbi   ⁴ , PhD ;   Predrag Klasnja   ⁵ , PhD ;   Susan Murphy   ^{4, 6} , PhD ;   Maureen A Walton   ^{1, 2} , MPH, PhD

¹ Department of Psychiatry, Addiction Center, University of Michigan, Ann Arbor, MI, United States

² Injury Prevention Center, University of Michigan, Ann Arbor, MI, United States

³ Institute of Social Research, University of Michigan, Ann Arbor, MI, United States

⁴ Department of Statistics, Harvard University, Cambridge, MA, United States

⁵ School of Information, University of Michigan, Ann Arbor, MI, United States

⁶ Computer Science, Harvard John A Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, United States