The word disruption in the second paragraph is closest

in meaning to …

interference
A study demonstrated that spending too much time on watching Tv during the day or at bedtime often causes bedtime disruption, stress, and short sleep duration.
Another research found that there is a significant relationship between the amount of time spent for watching television during adolescence and early adulthood, and possibility of being aggressive.
  Tanti : Dewi, why didn't you come to my wedding anniversary last night?