Obsessive-compulsive disorder involves both obsessions and
compulsions. Obsessions often include intense worry and fears of
contamination, accidents, or of one's own aggression.
Compulsions are acts repeated to reduce anxiety and commonly
include:
a. cleaning, checking, and counting
b. running, yelling, and hitting
c. yawning, stretching, and smiling
d. travelling, shopping, and breaking the law