The defined contribution plan does not pay a specific benefit when you retire, and your retirement benefit is dependent on the earnings or losses of your investments. You are allowed to contribute a percentage of your pay, and the university will make a matching contribution.
The cause of OCD is not known. Research indicates that OCD is a neurological brain disorder. Evidence suggests that people with OCD have a deficiency of a chemical in the brain called serotonin. OCD tends to run in families, suggesting a genetic component. However, OCD may also develop without a family history of OCD.
Research suggests that OCD involves problems in communication between the front part of the brain and deeper structures of the brain. These brain structures use a neurotransmitter (basically, a chemical messenger) called serotonin.