Tablets and smartphones may affect social and emotional development, scientists speculate
Two pull quotes:
The researchers warned that using a tablet or smartphone to divert a child’s attention could be detrimental to “their social-emotional development”.
Radesky questioned whether the use of smartphones and tablets could interfere with the ability to develop empathy and problem-solving skills and elements of social interaction that are typically learned during unstructured play and communication with peers.
If that's true of children as a whole, I would guess it is far more true of non-neuro-typical kids.