Answer: 6 years
Explanation: HIPAA, the Health Insurance Portability and Accountability Act was passed into law by Congress in 1996. It protects personal information used in the healthcare and related industries such as health insurance companies. Under HIPAA, documents such as complaints and responses must be kept six years after they were filed or when last time in effect by any covered entity. Covered Entities are organisations covered by the act.
Answer: Those who studied alone were exposed to the CONTROL condition.
Explanation: In an experiment, there are usually 2 conditions.
1.) The Natural condition
2.) The controlled condition
In this case, the controlled condition, the researcher is testing one person at a time as against testing with a group of people. This is to ensure that the researcher can adjust the conditions of the other experiment by studying just one person at a time.