Variations and Characteristics of Mental Retardation Essay example

1100 Words 5 Pages
Mental Retardation is an old fashioned term for people who have problems learning and developing, but is defined as a disability characterized by significant limitations both in intellectual functioning and behaviors in expressing conceptual, social and practical skills in approximately one to three percent of the United States (Sue, Sue, & Stanley, 2010). Mental retardation is categorized by the DSM-IV-TR as being a genetic disorder usually first diagnosed in infancy, childhood or adolescence, and is not considered to be a cognitive disorder. The following criteria is required for diagnosis of mental retardation under the DSM-IV-TR, Intellectual functioning under the IQ score of 70, concurrent deficiencies in adaptive behaviors and …show more content…
Mental Retardation is an old fashioned term for people who have problems learning and developing, but is defined as a disability characterized by significant limitations both in intellectual functioning and behaviors in expressing conceptual, social and practical skills in approximately one to three percent of the United States (Sue, Sue, & Stanley, 2010). Mental retardation is categorized by the DSM-IV-TR as being a genetic disorder usually first diagnosed in infancy, childhood or adolescence, and is not considered to be a cognitive disorder. The following criteria is required for diagnosis of mental retardation under the DSM-IV-TR, Intellectual functioning under the IQ score of 70, concurrent deficiencies in adaptive behaviors and onset before the age of eighteen (Sue, Sue, & Stanley, 2010). Mental retardation is thought to be produced biologically, psychologically, socially and environmentaly, being caused by injury, disease or abnormality (Sue, Sue, & Stanley, 2010). There are many disorders under the umbrella of mental retardation, with the most common being Fragile X Syndrome, Down Syndrome, and Alcohol Fetal Syndrome (Sue, Sue, & Stanley, 2010).
Fragile X Syndrome is the most common inherited form of mental retardation, and the most common known cause of autism, occuring as a result of mutation of the FMR-1 gene at the bottom of the X chromosome, which is essential for normal brain development (Bambang, 2011). Researchers believe that this defect is a result
Open Document