New study finds small reductions in social media use are linked to improvements in health and well-being::A study published in the Journal of Technology in Behavioral Science suggests that reducing social media usage by just 15 minutes per day can lead to improved health and well-being, particularly in terms of social life, vitality, and overall health. These findings add to the growing body of research indicating that limiting social media usage can have positive effects. …
Small sample sizes don’t invalidate studies. They reduce the statistical certainty, but can still be accurate and there’s formulas for gauging how accurate a given sample size is based off the standard deviation.
The student only part does mean a sampling biase, but that doesn’t invalidate things either. Mostly just limits it such that we can only make the claim for students and not anyone else (but it’s still a meaningful result and provides justification for larger studies).