Steer, R. A., Clark, D. A., Kumar, G., & Beck, A. T. (2008). Common and specific dimensions of self-reported anxiety and depression in adolescent outpatients. Journal of Psychopathology and Behavioral Assessment, 30, 163-170.
Clark, D. A., & Guyitt, B. (2008). Pure obsessions: Conceptual misnomer or clinical anomaly? In J. S. Abramowitz, D. McKay, & S. Taylor (Eds.), Obsessive-compulsive disorder: Subtypes and spectrum conditions (pp. 53-75). Amsterdam: Elsevier.
Clark, D. A. (2007). Obsessions and compulsions. In: N. Kazantzis & L. L’Abate (Eds.), Handbook of homework assignments in psychotherapy: Research, practice and prevention (pp. 315-334). New York: Springer.
Purdon, C. & Clark, D. A. (2005). Overcoming Obsessive Thoughts: Free Your Mind from OCD. New Harbinger Press, Oakland, CA.
Clark, D. A. (2005). Intrusive thoughts in clinical disorders: Theory, Research & Treatment. New York: Guilford Press.
Clark, D. A., Antony, M. M., Beck, A. T., Swinson, R. P., & Steer, R. A. (2005). Screening for obsessive and compulsive symptoms: Validation of the Clark-Beck Obsessive-Compulsive Inventory, Psychological Assessment, 17, 132-143.
Clark, D. A. & O’Connor, K. (2005). Thinking is believing: Ego-dystonic intrusive thoughts in obsessive-compulsive disorder. In: D. A. Clark (Ed.), Unwanted intrusive thoughts in clinical disorders. New York: Guilford Publications.
Clark, D. A. & Rhyno, S. (2005). Unwanted intrusive thoughts in nonclinical populations. In: D. A. Clark (Ed.), Unwanted intrusive thoughts in clinical disorders. New York: Guilford Publications.
Reinecke, M. A., & Clark, D. A. (2004). Cognitive therapy across the lifespan: Theory, Research and Practice. Cambridge, UK: Cambridge University Press.
Clark, D. A. (2004).Cognitive behaviorial therapy for OCD. New York: Guilford Press.
Clark, D. A. (2004). Cognitive theory and treatment of obsessive-compulsive disorder: Past contributions and current developments. In: R. L. Leahy (Ed.), Contemporary cognitive therapy: Theory, research and Practice. New York: Guilford Publications.
Clark, D. A. (2004). Design considerations in prevention research. In D. J. A. Dozois & K. S. Dobson (Eds.), The prevention of anxiety and depression: Theory, research and practice. Washington, DC: American Psychological Association Press.
Clark, D. A. & Reinecke, M. (2004). Cognitive therapy in the 21st century: Current status and future directions. In: M. Reinecke & D. A. Clark (Eds.), Cognitive therapy across the lifespan: Theory, research and practice (pp. 507-528). Cambridge: Cambridge University Press.
Clark, D. A. & Purdon, C. (2004). Cognitive theory and therapy of obsessions and compulsions: A critical re-examination. In: M. Reinecke & D. A. Clark (Eds.), Cognitive therapy across the lifespan: Theory, research and practice (pp. 90-116). Cambridge: Cambridge University Press.
Clark, D. A., Purdon, C., & Wang, A. (2003). The Meta-Cognitive Beliefs Questionnaire: Development of a measure of obsessional beliefs. Behaviour Research and Therapy, 41, 655-669.
Clark, D. A., & Beck, A. T. (2002). Clark-Beck Obsessive Compulsive Inventory. San Antonio, TX: The Psychological Corporation.
Clark, D. A., & Beck, A. T. (2002). Manual for the Clark-Beck Obsessive Compulsive Inventory. San Antonio, TX: The Psychological Corporation.
Purdon, D. A. & Clark, D. A. (2002). Mental control beliefs and appraisals in OCD. In R.O. Frost & G. Steketee (Eds.), Cognitive approaches to obsessions and compulsions: Theory, assessment and treatment (pp. 29-43). Oxford: Elsevier Press.
Clark, D. A. (2002). A cognitive perspective on OCD and depression: Distinct and related features. In R.O. Frost & G. Steketee (Eds.), Cognitive approaches to obsessions and compulsions: Theory, assessment and treatment (pp. 233-250). Oxford: Elsevier Press.
Clark, D. A. (2001). The persistent problem of negative cognition in anxiety and depression: New perspectives and old controversies. Behavior Therapy, 32, 3-12.
Purdon, C. & Clark, D. A. (2001). Suppression of obsession-like thoughts in nonclinical individuals: Impact on thought frequency, appraisal and mood state. Behaviour Research and Therapy, 39, 1163-1181.
Clark, D. A. (2000). Cognitive behavior therapy for obsessions and compulsions: New applications and emerging trends. Journal of Contemporary Psychotherapy, 30, 129-147.
Purdon, C., & Clark, D. A. (2000). White bears and other elusive intrusions: Assessing the relevance of thought suppression for obsessional phenomena. Behavior Modification, 24, 425-453.
Clark, D. A., Purdon, C., & Byers, E. S. (2000). Appraisal and control of sexual and non-sexual intrusive thoughts in university students. Behaviour Research and Therapy, 38, 439-455.