This is number 32 in my series on learning theories. Psychologists and cognitive scientists have offered a number of useful theories that aid our understanding of learning. In this series I'm providing a brief overview of each theory, and how each can be applied in education. Previous posts in this series are all linked below. My last post explored the work of Seymour Papert and his theory of learning by making, also known as constructionism. In this post we return to the cognitive domain, with an examination of Allan Paivio's theory of dual coding. As usual, this is a brief and concise explanation of the theory, and if you wish to delve deeper, you are advised to read the associated literature.