Here is the abstract of the linked paper: https://psycnet.apa.org/doiLanding?doi=10.1037%2Ffam0001390
The article does not accurately reflect even the abstract, so I would not count on it to accurately reflect the full paper.
From the article (emphasis mine):
the researchers analyzed shifting dynamics of over 11,000 families with kids *for a decade*
The present study examined the longitudinal, bidirectional associations between early adolescents’ electronic media use and family conflict *across 3 years*