Improving methods of dietary assessment remains an active area of inquiry and this extends to research with children. Enhancing existing methods using technology is an area that will undoubtedly continue to develop, with implications for reducing respondent burden and more effectively engaging children. In the meantime, it is essential to select the best possible measure for the population of interest and to analyze and interpret the data in light of what is known about biases in self-report measures of dietary intake. The Measures Registry and other complementary resources can facilitate this goal, helping to build a stronger evidence base for the prevention of obesity.