One of the greatest challenges in education today is to adapt and respond to a linguistically and culturally diverse world, and to combat social disintegration and discrimination. Participatory and collaborative action research represents an empowering and emancipatory approach to this challenge because the "target groups" become involved as equal partners. This book provides guidance for trainers of youth and adult educators and for those who manage non-formal education and curriculum development programmes in youth and adult literacy. It is also aimed at publishers and authors who want to improve their services and products by collaborating more closely with their readerships. Contents of this book are as follows: (1) Introduction (Hassana Alidou and Christine Glanz); (2) Action research from a theoretical perspective (Hassana Alidou and Christine Glanz); (3) Conducting action research--three examples from practice (Hassana Alidou, Christine Glanz, Maman Mallam Garba, Alemayehu Hailu Gebre and Mamadou Amadou Ly); (4) A frame of reference for good quality youth and adult literacy provision in multilingual contexts (Hassana Alidou and Christine Glanz); (5) From theory to practice: an application of quality principles and criteria (Hassana Alidou and Christine Glanz); and (6) Summary of the main messages (Hassana Alidou and Christine Glanz). A glossary and bibliography are included.