Mental retardation is a term for a pattern of persistently slow learning of basic motor and language skills ("milestones") during childhood, and a significantly below-normal global intellectual capacity as an adult..
Learning disability
In the United States and Canada, the term learning disability is used to refer to psychological and neurological conditions that affect a person's communicative capacities and potential to be taught effectively.

The term includes such conditions as dysgraphia (writing disorder), dyslexia (reading disorder), dyscalculia (mathematics disorder) and developmental aphasia.
In the United Kingdom, the term learning disability is used more generally to refer to developmental disability.
Someone with a learning disability does not necessarily have low or high intelligence, nor any innate inability to learn.
It just means this individual has an impairment to their ability due to a processing disorder, such as auditory processing or visual processing, that is detrimental to learning from traditional teaching methods.
Learning disabilities are usually identified by school psychologists through testing of intelligence, academics and processes of learning..
For more information about the topic Learning disability, read the full article at or see the following related articles:
Mental retardation — Mental retardation is a term for a pattern of persistently slow learning of basic motor and language skills ("milestones") during childhood, and a

Dyslexia— Developmental dyslexia is a condition or learning disability which causes difficulty with reading and writing. Its standard definition is a Special education — Special education, describes an educational alternative that focuses on the teaching of students with academic, behavioral, health, or physical needs

Brain damage — Brain damage or brain injury is the destruction or degeneration of brain cells

Brain damage
Brain damage or brain injury is the destruction or degeneration of brain cells. Brain damage may occur due to a wide range of conditions, illnesses, or injuries.

Possible causes of widespread (diffuse) brain damage include prolonged hypoxia (shortage of oxygen), poisoning, infection, and neurological illness.
Common causes of focal or localized brain damage are physical trauma (traumatic brain injury), stroke, aneurysm, or neurological illness.
The extent and effect of brain injury is often assessed by the use of neurological examination, neuroimaging, and neuropsychological assessment.
Brain injury does not necessarily result in long-term impairment or disability, although the location and extent of damage both have a significant effect on the likely outcome..
For more information about the topic Brain damage, read the full article at or see the following related articles:
Cerebral contusion — Cerebral contusion is a form of traumatic brain injury, a bruise of the brain tissue. Like bruises in other tissues, cerebral contusion can be
Head injury— Head injury is a trauma to the head, that may or may not include injury to the brain. The incidence (number of new cases) of head injury is 300 per

Amnesia — Amnesia (or amnaesia in Commonwealth English) is a condition in which memory is disturbed. The causes of amnesia are organic or functional.
Traumatic brain injury — Traumatic brain injury (TBI), traumatic injuries to the brain, also called intracranial injury, or simply head injury, occurs when a sudden