Obsessive-compulsive spectrum conditions are characterized by intrusive thoughts, urges, or images and repetitive behaviors or mental acts performed to reduce distress, neutralize perceived threat, or prevent feared outcomes. Intrusive thoughts are common in the general population, but in obsessive-compulsive disorder (OCD) they are typically experienced as highly significant, threatening, morally disturbing, or difficult to dismiss.
Contemporary approaches conceptualize obsessive-compulsive phenomena dimensionally, ranging from subclinical intrusive thoughts and rigid beliefs to clinically significant OCD. A central feature across this spectrum is the interaction between intrusive cognitions, maladaptive beliefs, anxiety or disgust, and repetitive strategies aimed at reducing uncertainty or distress.
These measures assess the frequency, severity, and dimensional structure of obsessions and compulsions. They may focus on general OCD severity, specific symptom domains, current distress, impairment, or broader obsessive-compulsive symptom profiles.
The Obsessive-Compulsive Inventory (OCI-R) is a widely used self-report measure assessing symptom dimensions such as washing, checking, ordering, obsessing, hoarding, and neutralizing.
The Yale-Brown Obsessive Compulsive Scale (Y-BOCS, YBOCS-SR) is a clinician-administered reference measure of OCD severity. It evaluates obsessions and compulsions in terms of time, distress, interference, resistance, and control.
The Yale-Brown Obsessive Compulsive Scale II (Y-BOCS-II) is a revised version designed to improve sensitivity to symptom change and better assess avoidance. ©
The Dimensional Obsessive-Compulsive Scale (DOCS) assesses severity across major OCD symptom dimensions, including contamination, responsibility for harm, unacceptable thoughts, and symmetry or ordering.
The Florida Obsessive-Compulsive Inventory (FOCI) provides a brief assessment of obsessive-compulsive symptoms and severity.
The Padua Inventory (PI, PI-WSUR) assesses common obsessive-compulsive symptoms such as checking, contamination concerns, impulses, and mental control difficulties.
The Vancouver Obsessional Compulsive Inventory (VOCI) provides a multidimensional self-report assessment of obsessive-compulsive symptoms, including contamination, checking, obsessions, hoarding, just-right feelings, and indecisiveness.
The Maudsley Obsessive-Compulsive Inventory (MOCI) is an early measure of obsessive-compulsive symptoms, assessing checking, washing, slowness, and doubting. ✝
The Not Just Right Experiences Questionnaire–Revised (NJRE-QR) assesses the occurrence and severity of “not just right” experiences – feelings that something is incomplete, incorrect, or not as it should be.
The Obsessive-Compulsive Trait Core Dimensions Questionnaire (OC-TCDQ) assesses two core motivational dimensions underlying obsessive-compulsive phenomena: harm avoidance and incompleteness.
These measures assess obsessive-compulsive symptoms in children and adolescents using developmentally appropriate formats. They may include self-report, parent report, clinician-rated assessment, or broader behavioral screening.
The Children's Yale-Brown Obsessive Compulsive Scale (CY-BOCS) is a clinician-administered measure of OCD symptom severity in children and adolescents.
The Obsessive-Compulsive Inventory – Child Version (OCI-CV) adapts dimensional OCD symptom assessment for younger populations.
The Child Behavior Checklist – Obsessive Compulsive Subscale (CBCL-OCD/OCS) is a brief screening measure derived from the CBCL, using a small set of items associated with obsessive-compulsive behaviors.
These measures assess personality-related obsessive-compulsive traits, such as rigidity, perfectionism, excessive control, orderliness, indecisiveness, and difficulty delegating or relaxing. They focus on enduring patterns rather than current OCD symptoms alone.
The Five-Factor Obsessive-Compulsive Inventory (FFOCI, FFOCI-SF) is a measure of obsessive-compulsive personality disorder traits developed within the Five-Factor Model framework.
The Obsessive-Compulsive Personality Disorder Scale (OCPDS) assesses traits and features associated with obsessive-compulsive personality disorder, including rigidity, perfectionism, orderliness, and excessive control.
The Pathological Obsessive Compulsive Personality Scale (POPS) assesses maladaptive obsessive-compulsive personality features, including rigidity, perfectionism, excessive control, and difficulty relaxing standards.
The Obsessive-Compulsive Personality Disorder Impairment Scale (OCPD-IS) assesses impairment associated with obsessive–compulsive personality disorder, including problems in identity, self-direction, empathy, and intimacy.
These instruments assess maladaptive beliefs and interpretations of intrusive thoughts that are central to cognitive-behavioral approaches to OCD. They focus on inflated responsibility, overestimation of threat, thought-action fusion, need for certainty, perfectionism, and beliefs about the importance or controllability of thoughts.
The Obsessive Belief Questionnaire (OBQ) assesses belief domains associated with OCD, including inflated responsibility, overestimation of threat, perfectionism, intolerance of uncertainty, and the need to control thoughts.
The Interpretation of Intrusions Inventory (III) assesses how individuals interpret unwanted intrusive thoughts, images, or impulses, including beliefs about their meaning, danger, or moral significance.
The Responsibility Assumptions Scale (RAS) and Responsibility Interpretations Questionnaire (RIQ) assess inflated responsibility beliefs and interpretations of responsibility in ambiguous or intrusive situations. These constructs are central to cognitive models of obsessive-compulsive symptoms, where intrusive thoughts may be interpreted as personally significant, dangerous, or requiring prevention of harm.
The Thought-Action Fusion Scale (TAFS-R) assesses the tendency to equate thoughts with actions or consequences, such as believing that having a thought is morally equivalent to acting on it or increases the likelihood of the feared event.
The Ascription of Responsibility Scale assesses the tendency to attribute responsibility to oneself for preventing harm, negative outcomes, or morally significant consequences.
The Inventory of Beliefs Related to Obsessions (IBRO) assesses dysfunctional beliefs associated with obsessive-compulsive symptoms, including responsibility, threat overestimation, perfectionism, intolerance of uncertainty, and the importance of intrusive thoughts.
The Intrusions Questionnaire assesses unwanted intrusive thoughts and their appraisal, including frequency, distress, perceived importance, and difficulty dismissing the intrusion.
The Penn Inventory of Scrupulosity (PIOS) assesses religious obsessive-compulsive symptoms, including fears of sin, moral or religious wrongdoing, and compulsive efforts to obtain certainty or reassurance.
The Responsibility Appraisal Questionnaire (RAQ) assesses inflated responsibility appraisals related to intrusive thoughts and obsessive-compulsive symptoms. n/a
The Brown Assessment of Beliefs Scale (BABS) assesses insight and conviction across obsessional or body dysmorphic beliefs, including fixity, attempts to disprove beliefs, and awareness of possible inaccuracy. n/a
Some repetitive and control-oriented behaviors overlap with OCD but are now often treated as related or distinct conditions.
The Saving Inventory Revised (SI-R) assesses hoarding-related behaviors, including difficulty discarding, excessive acquisition, and clutter.
The Hoarding Rating Scale (HRS) provides a brief assessment of hoarding severity and impairment.
Some compulsive behaviors, such as compulsive buying, have also been assessed using OCD-derived frameworks such as the YBOCS-SV.
These measures assess obsessive-compulsive and related symptoms centered on appearance, perceived bodily defects, hair pulling, or skin picking. They focus on repetitive behaviors, preoccupations, urges, distress, and impairment connected with the body or appearance.
The Body Dysmorphic Disorder Yale-Brown Obsessive Compulsive Scale (BDD-YBOCS) assesses severity of body dysmorphic symptoms, including preoccupation, distress, avoidance, and compulsive behaviors such as checking or reassurance seeking.
The Massachusetts General Hospital Hairpulling Scale (MGH-HPS) assesses severity of hair-pulling symptoms.
The Skin Picking Scale-Revised (SPS-R) assesses severity and impairment associated with skin-picking behavior.
⇒ Intolerance of Uncertainty. OCD often overlaps with intolerance of uncertainty through reassurance seeking, checking, doubt, and difficulty tolerating unresolved threat.
⇒ Emotion Regulation. Compulsions, avoidance, and rituals may function as strategies for reducing anxiety, disgust, guilt, or distress.
⇒ Perfectionism. Obsessive-compulsive personality traits overlap with perfectionism, overcontrol, rigidity, and excessive standards.
⇒ Anxiety Disorders. OCD overlaps with anxiety through threat anticipation and distress, but differs by the central role of obsessions and compulsive neutralizing strategies.