Comparing the Self-Report and Measured Smartphone Usage of College Students: A Pilot Study

The SAMS: Smartphone Addiction Management System and Verification

(2014) Heyoung Lee et al.   JOURNAL OF MEDICAL SYSTEMS

The Smartphone Addiction Scale: Development and Validation of a Short Version for Adolescents

(2014) Min Kwon et al.   PLoS One

The invisible addiction: Cell-phone activities and addiction among male and female college students

(2014) James Roberts et al.   Journal of Behavioral Addictions

Objective vs. Self-Reported Physical Activity and Sedentary Time: Effects of Measurement Method on Relationships with Risk Biomarkers

(2012) Carlos A. Celis-Morales et al.   PLoS One

Introduction to Behavioral Addictions

(2010) Jon E. Grant et al.   AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE

Relationship Between Self-report and an Objective Measure of Television-viewing Time in Adults

(2009) Jennifer J. Otten et al.   Obesity