Correlation vs Causation?
I never really did enough political science to get a proper understanding of maths and stats, but the one handy question I learned (which can be asked of a lot of presentations) is whether the findings show causation (i.e. A actually results in B) or merely correlation (i.e. the two merely happen to occur together, perhaps because both are results of C).
Unfortunately, I see no evidence that anyone asked that question before this scaremongering claim that texting leads to underage drinking and sex:
Parents have been warned to watch out for signs of excessive texting in their children, amid concerns it poses a new health risk.
Teenagers sending 120 text messages a day are more likely to drink, smoke and have sex, claims a US doctor.
That teenagers who text heavily are more likely to have done these things does not mean that texting causes them to engage in such activities. The causation could possibly run the other way round or, perhaps more plausibly, it could be that both behaviours are explained by some third factor, such as high disposable income or lack of parental supervision.