. >> in just over a half hour, tiffany davis will be testifying before the senate subeconomiee on consumerction this comes after the "wall street journal's" expose he facebook's knowledge about the impact on teens. it referenced, saying it's not accurate to say thatted research demonstrates that instagram is toxic for teen girls, noting in certain areas teen girls say instagram made them feel better. slides are intended to give context around the controversial research one slide reports one in five teens makes them feel worse, but the an station notes that the research was not intended and doesnot evaluate causal claims so the committee's chair, richard of today's event this hearing will examine the toxic effect of instagram and facebook on young people and others, revelations about facebook and others have raised profound questions, but what can and should be done to protect people the committee's ranking member marsha blackburn saying in a statement, quote, mark zuckerberg agency guiding principal for facebook is profit, aware that facebook had serious and harmful issues then, of course,