Anyone who agrees to participate in the study probably already wants to be restricted, as they may feel social media negatively affects them, and want more help restricting it than their willpower alone. Then they will probably feel positive about the outcome.
Forcibly restricting unwilling kids will produce different outcomes that this study doesn’t seem to investigate (it would be unethical to force participation on kids who don’t want to participate in a study).
They will then try to generalise the positive outcome onto all kids, even though they didn’t study the unwilling ones.
They need to study the effects of different content delivery algorithims not just a blanket ‘social media’ IMO.
Anyone who agrees to participate in the study probably already wants to be restricted, as they may feel social media negatively affects them, and want more help restricting it than their willpower alone. Then they will probably feel positive about the outcome.
Forcibly restricting unwilling kids will produce different outcomes that this study doesn’t seem to investigate (it would be unethical to force participation on kids who don’t want to participate in a study).
They will then try to generalise the positive outcome onto all kids, even though they didn’t study the unwilling ones.
They need to study the effects of different content delivery algorithims not just a blanket ‘social media’ IMO.