Is this research not abit easy obvious? it took one to come up with the following research
Facebook makes you smarter; Twitter, YouTube don't: psychologist
The study found Facebook enhances intelligence because the mind has to work in keeping up with friends. It's also extremely diverse: Users can play games, chat with friends, view photos and videos and take tests.
Sudoku also stretched the working memory, as did keeping up with friends on Facebook, she said.
But text messaging, micro-blogging on Twitter and watching YouTube were all likely to weaken "working memory."
Also, playing video games, especially those that involve planning and strategy, can also be beneficial.