We had a feeling it wasn't good... 

"Thirty years ago it was estimated that roughly one in 2500 children had autism while today it is estimated that approximately one in 166 is diagnosed with the condition – more than a ten-fold increase."

Very interesting read- 67 pages but lots of pictures (smiles). The conclusion may be all you are interested in..... 

DOES TELEVISION CAUSE AUTISM?
Michael Waldman
Johnson Graduate School of Management
Cornell University

"As a final point, although as discussed our results do not definitively prove that early childhood television watching is an important trigger for autism, we believe our results provide sufficient support for the possibility that until further research can be conducted it might be prudent to act as if it were. In other words, maybe there should be additional emphasis placed on the recommendation of the American Academy of Pediatricians that early childhood television watching should be eliminated or at the very least quite limited (as discussed in footnote 3, the current recommendation is that there should be no television watching before the age of two and no more than one to two hours per day for older children). We see little downside in taking this step and a very large upside if it turns out that television indeed causes autism."