Surveys have shown that levels of literacy generally and of health literacy in particular affect patients' understanding of health issues and participation in health care decision making. As a result of studying health literacy levels, this -Aims to help physicians and others improve the quality of care for patients -Helps those in the medical community improve patient communications regarding medications, tests and procedures and informed consent -Guide for those in medicine, public health, sociology and medical sociology Section Julie A. Gazmararian, MPH; PhD; Ruth M. Parker, MD; Rima E. Rudd, ScD; Debra L. Roter, DrPH; Dean Schillinger, MD