The three sub-series:
Methods policy notes (ISSN: 2535-2474)
Campbell policy on specific methods for use in Campbell systematic reviews of intervention effects
Methods guides (ISSN: 2535-2482)
Guides on how to implement specific systematic review methods
Methods discussion papers (ISSN: 2535-2490)
New or innovative ideas currently in development in the field of methodology
These papers are intended for discussion and do not represent official policy or guidance.
All of the papers listed above are available in the Campbell online library: here.