Dr. Kenneth Craig has made landmark contributions to recognition, measurement and treatment of pain in infants, children, adults, and, specifically, populations with communication impairments, including people with brain impairments and older persons with dementia. His innovative nonverbal measurements have also had a widespread clinical impact and led to novel strategies for measuring pain in nonhuman animals. The work has led to re-conceptualization of the importance of social parameters in understanding and controlling pain. He has inspired and led a whole new field while training a new generation of pain researchers. His service to professional organizations has been exemplary