I did not know of the prevalence of parent concern about devices. Measuring device addiction has proven troublesome. A surprising find is that this came off as a parent guide when I thought it was going to be more empirical after reading the title. I don't have enough information to determine the validity. What was the sample size? Was there random assignment? Was it solely based on surveys? I could use it to explain correlation doesn't mean causation. Being a classroom teacher and witnessing teens on their phones, I agree but that could just be my confirmation bias.