english: So by comparing how similar GCSE results are in identical twins versus nonidentical twins and doing some clever maths, we can get an idea of how much variation in performance is due to the environment, and how much is due to genes.
non_english: Znamo ovo jer u strogo kontrolisanim eksperimentalnim istraživanjima, kada je učenicima dat materijal da uče, bilo da je u njihovom preferiranom ili suprotnom stilu, nema nikakve razlike u količini informacija koje usvoje.