Review of Recent Work on Narrow Resonance Models

We review recent work on narrow resonance models. We take the point of view that such models play a role similar to that of the Lee model in quantum field theory, and that they cannot therefore be directly compared with experiment. Examples of various aspects of these models, including general self-consistency and the construction of amplitudes with external currents are reviewed, and the related diseases are listed. A critical discussion of narrow resonance phenomenology is given. Associated questions which seem to us suitable for further study are discussed and summarized.