Science and practice often end up in different worlds (Goldfried and Wolfe, 1996, 1998). For those who have consistently advocated the importance of a reciprocal relationship, this is deeply disappointing. The increasing trend towards evidencebased, or evidence-informed, practice should, therefore, be a source of pleasure to a science-based profession. However, it can become a source of regret and, at least when interpreted in an overly narrow way, lead to a sense of uneasiness that the advancement of our science could be overtaken by ‘the unthinking application of scientism’ (Salkovskis, 2002: 4).