In cases where the host is often present, there are a few triggers that can cause the host to retreat. Stress can often cause alters to become the present personality,[7] as alters are often formed to cope with traumatic experiences. In people who are more aware of their host and alters, the host may choose to retreat and give way to a more capable personality.[8] For example, a host personality may allow a more studious personality to take over the night before a major exam, or while taking an exam.