You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is A mother and her 4 year old son are seated alone in
a reception area with the child staring off into space,
rocking and constantly twisting a strand of hair about
his fingers. Upon entry of another person, the child
begins to beat his fist against the side of his face and
behaves as though he does not hear his mother speaking
to him. This behavior is most characteristic of: and explain in detail?
None