Robert Dunbar explains the effects of mental effects in his article titled Mental Retardation. The author talks about the personality traits that come with this disorder as well as the percentile that are dampered by these dreadful conditions. Dunbar explains case studies that he includes people with the disorder talking about the true nature of the beast. Throughout the article he eventually comes out about the symptoms of some of these brutal mental problems (Dunbar). He mentions that none of these disorders are better than the other but some are easier on the personality than others. In his study they are conducting a experiment to see the effects of mental illnesses.
Robert dunbar talks about the guidelines in his book of what normal people
