From a sample of 751 adults with intellectual disabilities who experienced a crisis, demographic and clinical profiles of 39 adults who threatened to commit suicide were compared to 28 adults who attempted suicide. These individuals were then compared to 337 adults who behaved aggressively toward others. Individuals who attempted suicide appeared similar to those who voiced suicide with the exception that suicide attempters were younger and more likely to visit the emergency department. Females, higher functioning individuals, and persons with a history of self-harm had higher odds of attempting or threatening suicide