Y-BOCS Symptom Checklist

Obsessions

Check any obsessive thoughts that you currently experience or have experienced in the past.

Aggressive Obsessions

Fear of harming yourselfFear of harming othersViolent or horrific imagesFear of blurting out obscenities or insultsFear of doing something embarrassingFear of acting on unwanted impulses (e.g., to stab a friend)Fear of stealing thingsFear of being responsible for something terrible happening (e.g., fire, burglary)

Contamination Obsessions

Concerns or disgust with bodily waste or secretions (e.g., urine, faeces, saliva)Concern with dirt or germsExcessive concern with environmental contaminants (e.g., asbestos, radiation, toxic waste)Excessive concern with household items (e.g., cleaners, solvents)Excessive concern with animals or insectsBothered by sticky substances or residuesConcerned will get ill because of contaminantConcerned will get others ill by spreading contaminant (aggressive)

Sexual Obsessions

Forbidden or perverse sexual thoughts, images, or impulsesSexual content involving children or incestObsessions about sexual orientationAggressive sexual behaviour towards others

Hoarding/Saving Obsessions

Fear of losing things or throwing things awayDistress about discarding items

Religious Obsessions (Scrupulosity)

Concerned with sacrilege and blasphemyExcessive concern with right/wrong or morality

Symmetry/Exactness Obsessions

Need for symmetry or exactnessAccompanied by magical thinking (e.g., concerned that mother will have accident unless things are in the right place)

Somatic Obsessions

Excessive concern with illness or diseaseExcessive concern with body part or aspect of appearance (not BDD)

Miscellaneous Obsessions

Need to know or remember certain thingsFear of saying certain thingsFear of not saying just the right thingFear of losing thingsIntrusive (non-violent) imagesIntrusive nonsense sounds, words, or musicBothered by certain sounds or noisesLucky/unlucky numbersColours with special significanceSuperstitious fears

Compulsions

Check any compulsive behaviors that you currently perform or have performed in the past.

Cleaning/Washing Compulsions

Excessive or ritualized hand washingExcessive or ritualized showering, bathing, tooth brushing, grooming, or toilet routineExcessive cleaning of household items or other objectsOther measures to prevent or remove contact with contaminants

Checking Compulsions

Checking locks, stove, appliances, etc.Checking that you did not or will not harm othersChecking that you did not or will not harm yourselfChecking that nothing terrible did or will happenChecking that you did not make a mistakeChecking tied to somatic obsessions

Repeating Rituals

Re-reading or re-writingNeed to repeat routine activities (e.g., in/out of doorway, up/down from chair)

Counting Compulsions

Counting objects, words, or actions

Ordering/Arranging Compulsions

Need to arrange items in a certain order or pattern

Hoarding/Collecting Compulsions

Difficulty discarding items, accumulating unnecessary possessions

Miscellaneous Compulsions

Mental rituals (other than checking/counting)Excessive list makingNeed to tell, ask, or confessNeed to touch, tap, or rubRituals involving blinking or staringMeasures (not checking) to prevent harm to self, harm to others, or terrible consequencesRitualized eating behavioursSuperstitious behavioursHair pulling (trichotillomania)

Y-BOCS-CL