Causes of mental retardation

Blake Zuckerman 3-25-00 Period 6 English Causes of Mental Retardation In order to be considered mentally retarded, you must have an IQ below 75, have significant limitations in two or more adaptive skill areas, and the condition is present from childhood (defined as age 18 or younger). People can be mentally retarded as all different levels. About 78% of mentally retarded people will only be a little slower than the average person, while in others it is very …

…mercury, and other dangerous toxins (Introduction to An American History of Mental Retardation). Bibliography Bibliography Introduction to An American History of Mental Retardation. 3-28-00. http://member.aol.com/MRandDD/introhx.htm. Introduction to Mental Retardation. 2-25-00. http://thearc.org/faqs/mrqa.html Mental Retardation Issues. 2-27-00. http://members.amaonline.com/nrogers/mr.htm The Arc of New Jersey. What is MR. 2-27-00. http://www.arcnj.org/html/what_is_mr.html