Why do I have to complete a CAPTCHA? Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. What can I do to prevent this in the future? If problems of training and education of mentally retarded children are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware.
If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Another way to prevent getting this page in the future is to use Privacy Pass. Check out the browser extension in the Firefox Add-ons Store. This article needs additional citations for verification. Developmental disability is a diverse group of chronic conditions that are due to mental or physical impairments. Developmental disabilities cause individuals living with them many difficulties in certain areas of life, especially in “language, mobility, learning, self-help, and independent living”. Down syndrome is a condition in which people are born with an extra copy of chromosome 21.
Normally, a person is born with two copies of chromosome 21. However, if they are born with Down syndrome, they have an extra copy of this chromosome. This extra copy affects the development of the body and brain, causing physical and mental challenges for the individual. CP is the most common motor disability in childhood. IQ below 70 along with limitations in adaptive functioning and onset before the age of 18 years.
The causes of developmental disabilities are varied and remain unknown in a large proportion of cases. Even in cases of known etiology the line between “cause” and “effect” is not always clear, leading to difficulty in categorizing causes. Genetic factors have long been implicated in the causation of developmental disabilities. There is also a large environmental component to these conditions, and the relative contributions of nature versus nurture have been debated for decades. Current theories on causation focus on genetic factors, and over 1,000 known genetic conditions include developmental disabilities as a symptom.