- Christopher B Barrett: Department of Applied Economics and Management, Warren Hall, Cornell University, Ithaca, NY 14853-7801, USA. cbb2@cornell.edu
Food security is a growing concern worldwide. More than 1 billion people are estimated to lack sufficient dietary energy availability, and at least twice that number suffer micronutrient deficiencies. Because indicators inform action, much current research focuses on improving food insecurity measurement. Yet estimated prevalence rates and patterns remain tenuous because measuring food security, an elusive concept, remains difficult.