Inference-based therapy (IBT) originated as a form of cognitive therapy developed for treating obsessive-compulsive disorder. IBT followed the observation that people with OCD often inferred danger on the basis of inverse inference (inferring reality from hypothetical premises). Later the model was extended to inferential confusion, where inverse inference leads to distrust of the senses and investment in remote possibility. In this model, individuals with obsessive-compulsive disorder are hypothesized to put a greater emphasis on an imagined possibility than on what can be perceived with the senses, and to confuse the imagined possibility with reality (inferential confusion). According to inference-based therapy, obsessional thinking occurs when the person replaces reality and real probab