Matthias Mehl is an Associate Professor of Psychology and Communication, an Associate Investigator at the Arizona Cancer Center, and an Affiliate Faculty at the Evelyn F. McKnight Brain Institute at the University of Arizona. Dr. Mehl has developed the Electronically Activated Recorder (or EAR) as a novel naturalistic observation method for studying everyday social behavior. He has repeatedly written about and given workshops on ambulatory assessment methods and recently co-edited the Handbook of Research Methods for Studying Daily Life. His research is funded by the National Institutes of Health, the American Cancer Society, and the John Templeton Foundation. He currently holds the position of Vice President of the Society for Ambulatory Assessment, and in 2011 was identified as a “Rising Star” by the Association for Psychological Science. He conducts research on the psychological and biological correlates and consequences of everyday kindness and compassion and on how everyday kindness and compassion can be promoted through intervention.