> critical for preventing depression How did they make the jump from "people with high frequency of depressed moods have more screen time" to "less screen time

> critical for preventing depression How did they make the jump from "people with high frequency of depressed moods have more screen time" to "less screen time is critical for preventing depression"? Its possible that is true but claiming this based on the study is like saying "less lying in your bed all day is critical for preventing depression"