Which of the following is UNTRUE regarding persons with disabilities?
1) Until the 19th century, it was common in the U.S. to expect families to care for their disabled relatives at home
2) A person with a disability is a incapable of living a normal life
3) A barrier experienced by those with mental retardation regarding their ability to live independently is that of being encouraged to continue childish behaviors instead of learning more adult behaviors
4) 20% of Americans have some form of disability