Difficulty initiating social interactions, and clear 
examples of atypical or unsuccessful responses to 
social overtures of others. May appear to have 
decreased interest in social interactions. For example, 
a person who is able to speak in full sentences and 
engages in communication but whose to-and-fro con-
versation with others fails, and whose attempts to 
make friends are odd and typically unsuccessful.Inflexibility of behavior causes significant interfer-
ence with functioning in one or more contexts. Dif-
ficulty switching between activities. Problems of 
organization and planning hamper independence.