eMarketer's Marcus Johnson, Cathy Boyle and Chris Keating sit down for a two-part, data-packed conversation about smartphones and their effects on our lives. In part one, the conversation focuses on usage patterns. Can smartphone addiction be quantified?

Want to take the tests mentioned in the podcast, and check your addiction level? Here are the links:

Baylor University

https://www.yahoo.com/tech/are-you-addicted-to-your-smartphone-read-these-12-110817737379.html

Iowa State University/University of Missouri

http://www.huffingtonpost.com/2015/05/18/nomophobia-smartphone-sep_n_7266468.html