This is the first book to address moral reasoning and socioscientific discourse. It provides a theoretical framework to reconsider what a "functional view" of scientific literacy entails, by examining how nature of science issues, classroom discourse issues, cultural issues, and science-technology-society-environment case-based issues contribute to habits of mind about socioscientific content. The text covers philosophical, psychological and pedagogical considerations underpinning moral reasoning, as well as the status of socioscientific issues in science education.