Abstract
Theory is a major element in professional knowledge. Doubts about its value reported by practitioners raise questions at a critical juncture in the careers field about the relevance of prevailing theories and how they are approached. The topic of the relationship between theory and practice is a sensitive one in the debate on competencies and an illuminating one in that on post-modernism. As recent studies demonstrate, problems in integrating theory and practice arise in training and may persist, but experienced practitioners achieve ‘fusion’ between them and become ‘practical theorists’. Practice is improvisatory, and is refined by frameworks provided by theory, critical thinking and ‘reflective practice’. However, theories are often tardy or irrelevant, and practitioners also need to be able to carry out their own research, including action research. This has implications for initial and in-service training, supervision and policy, and for the relationships between researchers, theorists and practitioners.