Mental Retardation also known as Intellectual disability (ID), is characterized by below-average intelligence or mental ability and a lack of skills necessary for day-to-day living. People with intellectual disabilities can and do learn new skills, but they learn them more slowly. There are varying degrees of intellectual disability, from mild to profound.
Intellectual disability is thought to affect about 1% of the population. Of those affected, 85% have mild intellectual disability. This means they are just a little slower than average to learn new information or skills. With the right support, most will be able to live independently as adults.
Rolling over, sitting up, crawling, or walking late
Talking late or having trouble with talking
Slow to master things like potty training, dressing, and feeding himself or herself
Difficulty remembering things
Inability to connect actions with consequences
Behavior problems such as explosive tantrums
Difficulty with problem-solving or logical thinking