Abstract
Recently, the university students who have Developmental Disorder are increased in Japan. They cannot adjust themselves well to the education program for mechanical engineering. Developmental Disorder is generally classified into three categories, namely, Asperger Syndrome (AS), Attention-Deficit/Hyperactivity Disorder (AD/HD) and Learning Disorder (LD). This classification is depends on the viewpoint of social behavior performances. In present report, Developmental Disorder is treated as the dispersion of the intelligence quotient (IQ) related to behavior functions to understand its nature. Example cases of the support to the Developmental Disorder students in Gunma University are reported.