A community developmental study indicates that subsyndromal obsessive thoughts and compulsive behaviors are common in the general population. Fullana et al. (p. 329) analyzed responses from structured interviews at ages 11, 26, and 32 years with nearly all of the 1,037 original participants in the Dunedin, New Zealand, study. Those who reported obsessions or compulsions at age 11 were more likely to report similar symptoms or to receive a diagnosis of obsessive-compulsive disorder (OCD) in adulthood. Only 2% met the criteria for an OCD diagnosis as adults, but subclinical obsessions and compulsions were reported by 13% and 17%, respectively, of the people without mental disorders. Such symptoms were also present in more than one-third of those with other anxiety disorders or depression. Obsessions about inflicting harm and compulsive checking to prevent harm were the most common. The only obsessive and compulsive symptoms associated with treatment seeking were fears of harming others and thoughts deemed to be shameful. Dr. Murray Stein highlights key findings of the study in an editorial on p. 271.