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Intellectual disability (ID), also known as general learning disability (in the United Kingdom), [3] and formerly mental retardation (in the United States), [4] [5] [6] is a generalized neurodevelopmental disorder characterized by significant impairment in intellectual and adaptive functioning that is first apparent during childhood.
Some symptoms that a child with intellectual disability might show are continued infant-like behavior, a lack of curiosity, the inability to meet educational demands, learning ability that is below average, and the failure to meet developmentally appropriate intellectual goals. Some children with severe intellectual disability may have seizures ...
There are a variety of disabilities affecting cognitive ability.This is a broad concept encompassing various intellectual or cognitive deficits, including intellectual disability (formerly called mental retardation), deficits too mild to properly qualify as intellectual disability, various specific conditions (such as specific learning disability), and problems acquired later in life through ...
Neurodevelopmental disorders are a group of mental conditions affecting the development of the nervous system, which includes the brain and spinal cord.According to the American Psychiatric Association Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, published in 2013, these conditions generally appear in early childhood, usually before children start school, and can ...
The scientific study of the causes of developmental disorders involves many theories. Some of the major differences between these theories involves whether environment disrupts normal development, if abnormalities are pre-determined, or if they are products of human evolutionary history which become disorders in modern environments (see evolutionary psychiatry). [5]
Children with ADNP syndrome show some degree of intellectual disability. The degree can range from mild (roughly 1 in 8 children) to severe (roughly half of children). Toilet training is delayed in most children. Loss of previously acquired skills was reported in one fifth of children. [1]
Most young children do not show any physical signs of FXS. [11] It is not until puberty that physical features of FXS begin to develop. [11] Aside from intellectual disability, prominent characteristics of the syndrome may include an elongated face, large or protruding ears, flat feet, larger testes (macroorchidism), and low muscle tone.
Individuals with this condition typically show severe intellectual disability, motor delays, severe speech delay and difficulties, infancy-onset hypotonia affecting the trunk, progressive hypertonia affecting the distal limbs, severe progressive microcephaly, autistic-like symptoms, aggressive behavior towards others and/or oneself, sleep abnormalities, and mild facial dysmorphisms such as a ...