I am very grateful to Jonatan Lundin for a lengthy conversation on the subject of topic patterns because it helped me to crystalize something important about the basis for the principles of EPPO information design and how they are derived.
Approaches based on psychology
Traditionally, theories of information design have been psychologically based. Researchers (usually academics) attempted to form a psychological theory about how we learn and then suggested information design approaches based on those theories. The success of such efforts has been mixed.