Imagery Rehearsal Therapy
Core Mechanism
Cognitive rescripting of nightmare content combined with imagery rehearsal changes nightmare frequency and distress through mechanisms likely involving memory reconsolidation and reduced conditioned fear
Ontology
Nightmares as a learned maladaptive sleep behavior that can be directly targeted and modified through intentional cognitive and imaginal intervention
Therapeutic Voice
"Choose any part of the nightmare and change it any way you want. It does not have to make sense. Then we will rehearse the new version."
View of the Person
A person whose nightmare disorder reflects a learned pattern of conditioned fear response that can be modified through intentional cognitive and imaginal intervention
Evidence
VA/DoD: strongly recommended for nightmare disorder. AASM: recommended. APA Div 12: well-established.
Multiple RCTs including landmark Krakow et al. (2001) JAMA study; replicated across PTSD and civilian nightmare populations
Cochrane review and meta-analyses support efficacy for nightmare frequency and distress
One of the most neglected evidence-based treatments in clinical practice despite strong guidelines support. Nightmares are a core PTSD symptom that standard PTSD treatments often do not fully resolve. Brief and structured enough to be completed in 3-4 sessions. Should be in every trauma clinician's toolkit.
Conditions
Epistemology
Blind Spots
Requires willingness to engage with nightmare content; some find rescripting counterintuitive; not suitable during acute destabilization; limited training infrastructure
Contraindications
Active psychosis, severe dissociation where imagery work risks destabilization, inability to generate or hold mental imagery, acute suicidality
Training
General CBT training plus IRT-specific workshop or self-study; relatively accessible
No formal certification; training available through workshops and published materials
1-2 day workshop sufficient for competent delivery
$200-800 for workshop training
Equity & Cultural Adaptations
Philosophical Roots
Behavioral learning theory; cognitive appraisal; Lang's emotional processing theory; sleep science
Related Modalities
Test Yourself
Can you actually change what you dream by rehearsing a different version while awake?
Show answer
Yes. IRT is based on evidence that nightmares are a learned sleep disorder and that mentally rehearsing an altered version while awake changes dream content. The mechanism is not fully understood but outcomes are robust.