Answer:
Attention.
Explanation:
Self-injurious behavior -
self - injurious behavior is also known as self harm .
It refers to the condition , when a person tries to harm himself , is referred to as self - injurious behavior , the condition is most commonly seen in the child suffering from autism .
Hence , from the given scenario of the question ,
As Miles feels frustrated when others ignores him , engaging in SIB is the only way to get attention of others ,