are a little more costly due to increased complexity of installation. These can include: ramps for accessible entry and exit, walk-in shower, sliding shelves, stairlifts, or even home elevators. Many homes are built or retrofitted with the Universal design model in mind, which makes everything in the home accessible to all people with or without functional limitations. Resources in the community Naturally occurring retirement communities, also known as NORCS, are another source of support for older adults wishing to age in place. A NORC, though not built specifically for a certain age demographic, occurs where a congregation of residents 60 and older live cooperatively. Some offer recreational activities, preventative health and social services for the community. This model can be supported by local, state, and federal dollars as well as community businesses, neighborhood associations and private foundations. Technological changes In some cases, the caregivers of people who are aging in place seek to persuade them to adopt new technology, which may include learning new skills and changing their daily routine to incorporate the technology. , there is research about how people aging in place try to use new technology when persuaded, but not much research about the extent to which they continue to use it after trying it for some time. Factors which contribute to the decision to try to technology are the anticipated benefits of the technology, the difficulty using it, the extent to which the user feels that harm will come from not using it, the availability of alternatives, support from others in their social circle, and their own personal attitudes and disposition. Biological reasons Many elders have difficulties with everyday functioning that require modifications to the houses or apartments they live in. There are several reasons why these changes happen: Motor functioning: In a 2002 study by Min Soo Kang, it was reported that of the elder population in America, 18% will have a disability. This calculates to 51 million Americans who have difficulties in functioning every day. 32% over age 65 will have difficulty walking, which may require use of walkers, wheelchairs and canes. To make life easier for the elder, some modifications that can aid them are wider entrances, grab rails, elevator chairs on stairs, etc. Fine motor functioning: Elders may have difficulty using their fingers, which can be problematic. As a result, modifications to handles, bathroom fixtures, etc. can aid with this problem. Cognitive