Action research (AR) is a powerful tool for health education and promotion practitioners who want to focus on improving the quality of their programs and services. In this Tool, we describe the characteristics and controversial aspects of AR, differentiate between traditional and action research, present the benefits of applying AR methods/techniques for investigating problems related to professional practice, and offer a four-phase methodological framework for conducting AR studies. Unlike traditional research, AR is a methodology that links theory, research, and practice; advances new knowledge and understandings via iterative action cycles; employs frontline health practitioners as researchers; and promotes collaborative practitioner-community partnerships. Egalitarian in its approach, AR offers an "insider's perspective" centered on context-specific problems and issues related to health promotion. AR falls into two categories: large-scale community-based research and small-scale practice-based research. Each cycle of the AR framework includes four phases: (a) preplanning/needs assessment, (b) planning/study organization, (c) action and observation/study implementation, and (d) reflection and planning/data analysis and interpretation. Using the AR primer in this Tool has the potential to empower health education/promotion practitioners, encourage collaborative partnerships, enhance practitioners' knowledge base, and promote social change.
