Abstract
The study of concepts can advance further by clarifying the meanings of basic terms such as “prototype” and by constructing a large-scale primary taxonomy of concept types. This paper presents the latter, based on concept structure, two secondary concept taxonomies and one of conceptual structures. The primary taxonomy organises much data and several previous taxonomies into a single framework. It suggests that many concept types exist, and that type determines how a concept is learned, is used and how it develops. As well as enumerating and interrelating some major types, the taxonomy predicts that many individuals' concepts will consist of mixes of information types. The present study suggests that the field will progress faster by ceasing to look for the single way anything is done. A better strategy is to enumerate concept types, ways each can be learned and developmental patterns, and then see what variables affect these and how common each is.