This important research literature review discusses some of the most prominent literature in the field of individual choice and economic welfare. It analyses material exploring how economics as a scientific enterprise may inform political decision-making. The premise is explored paradigmatically through different interpretations including utility-individualism in the context of welfare economics, preference-individualism in social choice theory, and choice-individualism in constitutional economics. The review covers the foundational literature as well as contemporary pieces, which have sparked further discussion in the field. This review will be valuable to researchers and scholars alike as well as to all those gravitating towards this fascinating topic.