antisocial personality disorder, a condition characterized by repetitive behavioral patterns that are contrary to usual moral and ethical standards and cause a person to experience continuous conflict with society. Symptoms include aggression, callousness, impulsiveness, irresponsibility, hostility, a low frustration level, marked emotional immaturity, and poor judgment. A person who has this disorder overlooks the rights of others, is incapable of loyalty to others or to social values, is unable to experience guilt or to learn from past behaviors, is impervious to punishment, and tends to rationalize his or her behavior or to blame it on others.