thought-action fusion thought-action fusion thought-action fusion (taf) is a polyseme defining false beliefs or self-confusing mind wandering about a biased and painful association/fusion between subjects' spontaneous thoughts and imaginary latent egodystonic desires or magical-thinking capabilities. these imaginary latent egodystonic desires or magical-thinking capabilities generally express harmful actions/behaviours (e.g. compulsions) that subjects appraise as highly possible, even though they have never existed so far. not to be confused with intrusive thoughts. thought-action fusionfalse beliefs from self-confusing mind-wandering about biased interpretations of intrusive thoughts are painful.specialtypsychiatry, clinical psychology causes the main causes of taf are (one or several) hold false beliefs that mind-wandering episodes involving cognitive/interpretation biases have generated, from specific patterns of intrusive thoughts. besides, a high level of negative affectivity is a mediator in the statistical relations between taf and the existence of psychological pains (e.g. anxiety, depression and shame), or some mental disorders. examples an adaa webinar highlighted several examples of taf, such as: intrusive thoughtscognitive biasesfalse beliefs driving is exciting, but anyone can run down pedestrians.this terrible thought is definitively a sign.i am losing control; i am going to run over a pedestrian anytime... my sharp knife could kill a baby.this horrific thought is almost surely revealing.i am probably going to kill my child in the near future... categories the two main categories of taf are the: likelihood taf, i.e. anxious and false beliefs (e.g. magical thinking) assuming that specific intrusive thoughts would trigger the (thought) harmful events in the future; moral taf, i.e. uncertainty-evoking and false beliefs that specific intrusive thoughts about religiously or ethically/morally inappropriate behaviours, are as reprehensible or shameful as actually performing the intrusive thoughts' content. diagnosis simple interviews with specific health professionals (e.g. psychologists, psychiatrists) allow diagnosing taf; there also exists a reliable psychometrics/estimator which is the: thought-action fusion questionnaire/scale. disorders taf happens in the anxiety disorders (e.g. gad), obsessive-compulsive disorders (e.g. pure o) and eating disorders (e.g. anorexia); it generally worsens the mental disorders' severities or outcomes, irrespective of the treatments. treatments the main medial treatments for taf are the cognitive-behavioral therapies, but mindfulness therapies like the acceptance and commitment therapy may also help. moreover medications like selective serotonin reuptake inhibitors may increase the psychotherapy efficiency, by alleviating the psychological pains the taf induces—see section on causes.