Thought-action fusion (TAF) refers to a set of cognitive biases that are thought to play a role in the development of obsessional phenomena. To measure these biases, R. Shafran, D. S. Thordarson, and S. Rachman (1996; Journal of Anxiety Disorders, 10, 379–391) developed the TAF-scale. They concluded that the TAF-scale possesses adequate psychometric qualities. The current study sought to further explore the reliability and validity of the TAF-scale. Results indicate that the TAF-scale has good internal consistency. TAF-scores correlated with self-reports of obsessional problems. Furthermore, mean scores in a mixed sample of anxiety disordered patients were higher than those in a normal sample. However, temporal consistency was somewhat disappointing. Also, the question remains whether TAF is specific to obsessive–compulsive disorder or taps more pervasive biases that play a role in a variety of disorders.

Cognitive bias, Obsessive–compulsive disorder, Thought-action fusion,
Behaviour Research and Therapy
Department of Psychology

Rassin, E.G.C, Merckelbach, H, Muris, P.E.H.M, & Schmidt, H.G. (2001). The thought-action fusion scale: further evidence for its reliability and validity. Behaviour Research and Therapy, 39(5), 537–544. doi:10.1016/S0005-7967(00)00031-0