Inference-Based CBT (I-CBT) for OCD in Leicester and Across the UK

Inference-Based CBT, often shortened to I-CBT, is a specialist approach developed by Dr Frederik Aardema that focuses on how doubt is created in the mind. Rather than starting with the thoughts or behaviours that follow a trigger, it looks at how the doubt itself forms. In OCD, the mind can build convincing “what if” scenarios that feel real, even when there is little or no evidence to support them. I-CBT helps you notice when this is happening and come back to what is actually present, reducing the pull of the doubt over time. 

I-CBT was developed specifically to treat OCD and has the strongest evidence base in this area. It is particularly effective for OCD themes that feel very thought-based, including harm OCD, relationship OCD, moral OCD, sexual intrusive thoughts, and existential or identity-based fears. It can also be helpful for health anxiety and other conditions where doubt and uncertainty drive the problem. If intrusive thoughts feel convincing in the absence of any real evidence, I-CBT is worth exploring.  

I-CBT works by helping you understand how OCD creates doubt through a process of faulty reasoning rather than in response to real-world events. In OCD, the mind builds an imagined scenario, often starting with a "what if," and then treats that scenario as though it reflects reality. I-CBT helps you identify this reasoning process, notice when you have stepped into an imagined world rather than responding to what is actually in front of you, and find your way back to the present. Over time, the intrusive thoughts lose their grip because the reasoning that drives them is no longer convincing. 

I-CBT can be effective for people who have not responded fully to standard CBT or ERP for OCD. ERP works by reducing the anxiety connected to obsessions, while I-CBT works at a different level by targeting the doubt itself. For some people, particularly those whose OCD is very thought-based or who find ERP difficult to engage with, I-CBT offers a route that other approaches did not. It does not require you to expose yourself to feared situations in the same way ERP does, which many people find more manageable. 

ERP, or Exposure and Response Prevention, works by helping you face feared situations without carrying out compulsions, reducing anxiety over time through repeated exposure. I-CBT takes a different approach. Rather than targeting the anxiety that follows an obsession, it addresses the reasoning process that creates the doubt in the first place. ERP asks you to tolerate uncertainty; I-CBT helps you understand why the uncertainty was never well-founded to begin with. Both are effective for OCD, and for some people a combination of the two approaches produces the best outcomes. 

ERP, or Exposure and Response Prevention, works by helping you face feared situations without carrying out compulsions, reducing anxiety over time through repeated exposure. I-CBT takes a different approach. Rather than targeting the anxiety that follows an obsession, it addresses the reasoning process that creates the doubt in the first place. ERP asks you to tolerate uncertainty; I-CBT helps you understand why the uncertainty was never well-founded to begin with. Both are effective for OCD, and for some people a combination of the two approaches produces the best outcomes. 

Yes, I-CBT is available online and research supports its effectiveness delivered in this format. Because I-CBT is a talking and reasoning-based therapy rather than one that requires physical tasks or in-person exercises, it adapts well to online sessions. We offer online I-CBT therapy to clients across the UK, delivered by a qualified and accredited therapist based in Leicester and Leicestershire with specialist experience in OCD and intrusive thoughts. I-CBT remains a relatively specialist area, and finding a therapist trained in it specifically matters more than location. 

You can book a free 15-minute consultation to get started. This is a straightforward conversation where you can describe what you are experiencing, ask any questions about I-CBT, and find out whether this approach is suited to your situation. There is no obligation. It is simply a chance to get clear on whether I-CBT is the right direction before committing to anything.  We offer I-CBT therapy in Leicester, across Leicestershire, and online across the UK.