YALE-BROWN OBSESSIVE COMPULSIVE SCALE (Y-BOCS)* ​

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Yale-Brown Obsessive Compulsive Scale (Y-BOCS)

This screening form calculates Y-BOCS totals for client use and documentation. Clinical interpretation should be performed by a qualified professional.

Client & Context

Client name

Date

Obsessions — Questions 1–5

1. Time occupied by obsessive thoughts

0 None 1 <1 hr/day or occasional 2 1–3 hrs/day or frequent 3 >3–8 hrs/day or very frequent 4 >8 hrs/day or nearly constant

2. Interference due to obsessive thoughts

0 None 1 Slight; performance not impaired 2 Definite interference; manageable 3 Substantial impairment 4 Incapacitating

3. Distress associated with obsessive thoughts

0 None 1 Not too disturbing 2 Disturbing; manageable 3 Very disturbing 4 Near constant/disabling

4. Resistance against obsessions

0 Resist all the time 1 Most of the time 2 Some effort 3 Yield without trying; some reluctance 4 Completely/willingly yield

5. Degree of control over obsessive thoughts

0 Complete control 1 Usually stop/divert with effort 2 Sometimes able to divert 3 Rarely successful 4 Completely involuntary

Compulsions — Questions 6–10

6. Time spent performing compulsive behaviors

0 None 1 <1 hr/day or occasional 2 1–3 hrs/day or frequent 3 >3–8 hrs/day or very frequent 4 >8 hrs/day or near constant

7. Interference due to compulsive behaviors

0 None 1 Slight; performance not impaired 2 Definite interference; manageable 3 Substantial impairment 4 Incapacitating

8. Distress if prevented from compulsions

0 None 1 Slightly anxious 2 Anxiety would mount; manageable 3 Very disturbing anxiety 4 Incapacitating anxiety

9. Resistance against compulsions

0 Always try to resist 1 Most of the time 2 Some effort 3 Yield to almost all; reluctant 4 Completely/willingly yield

10. Degree of control over compulsions

0 Complete control 1 Usually able to control 2 Strong pressure; control with difficulty 3 Very strong drive; can only delay 4 Completely involuntary/overpowering

Scores

Obsessions subtotal (Q1–Q5)	0
Compulsions subtotal (Q6–Q10)	0
Total Y-BOCS (0–40)	0

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Totals are informational and do not replace clinical evaluation.

Y-BOCS Symptom Checklist

Contamination Obsessions

Bodily waste/secretions Current Past p

Dirt/germs or environmental contaminants Current Past p

Household items/chemicals; sticky residues Current Past p

Animals/insects Current Past p

Other:

Aggressive Obsessions

Fear might harm self/others or something terrible will happen Current Past p

Violent/horrific images; blurting obscenities Current Past p

Other:

Sexual Obsessions

Forbidden/perverse sexual thoughts/images/impulses Current Past p

Other:

Religious / Moral (Scrupulosity)

Concern with sacrilege, blasphemy, morality Current Past p

Other:

Need for Symmetry / Exactness

Need for symmetry/exactness (± magical thinking) Current Past p

Other:

Somatic / Appearance

Concern with illness/disease; body/appearance Current Past p

Other:

Miscellaneous Obsessions

Need to know/remember; fear of not saying the right thing Current Past p

Intrusive images/sounds; lucky/unlucky numbers; superstitions Current Past p

Other:

Cleaning / Washing Compulsions

Excessive/ritualized handwashing Current Past p

Excessive showering/bathing/toothbrushing/grooming Current Past p

Cleaning of household/inanimate objects; measures to avoid contaminants Current Past p

Other:

Checking Compulsions

Locks, stove, appliances Current Past p

No harm to self/others; nothing terrible happened Current Past p

Didn’t make a mistake; somatic checking Current Past p

Other:

Repeating / Counting / Ordering

Rereading/rewriting; repeating routines (doorways, chair, etc.) Current Past p

Counting rituals Current Past p

Ordering/arranging Current Past p

Other:

Hoarding / Collecting

Saving/collecting beyond value; sorting/keeping useless items Current Past p

Other:

Miscellaneous Compulsions

Mental rituals (other than checking/counting) Current Past p

Excessive listmaking; need to tell/ask/confess; touch/tap/rub Current Past p

Ritualized eating; superstitious behaviors Current Past p

Other:

Note: Checklist selections help create a Target Symptoms List (mark principal symptoms with “p”).

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