Their 'hypothesis' is that watching excessive amounts of television reduces a person's ability to concentrate.
The results of the experiment did not support/confirm his 'hypothesis'.
put forward a 'hypothesis' = advance a 'hypothesis'
(..) Morning. Morning. You're making eggs for breakfast? This isn't breakfast,it's an experiment. 'Cause it looks a lot like breakfast. I finally have time to test my hypothesis about the separation of the water molecules from the egg proteins and its impact vis-a-vis taste. Sounds yummy. (..)2007 TvShow: The Big Bang Theory Title: The Luminous Fish Effect Season: 1 Episode 4