Not sure what you asking for. It's not about the topics, it's about methods of research. One cannot take a group of one Spanish region students (no mentions on

Not sure what you asking for. It's not about the topics, it's about methods of research. One cannot take a group of one Spanish region students (no mentions on how it was selected btw which suggest nobody cared), find a correlation between self-reported (hugely unreliable especially when it's kids reporting to adults) behavior within 1 year, and make essentially all-encompassing claim that causation is established.