english: This study tried to control for all the confounding factors, so it looked at children who were equally intelligent and from the same social-class background, so it seemed as if it was the reading which really helped those children go on and score better on those school tests later in their lives.
non_english: Istraživanje je pokušalo da kontroliše sve zbunjujuće faktore, pa je posmatralo decu koja su podjednako inteligentna i imaju isto socio-klasno poreklo, pa se činilo kao da je čitanje to što je zaista pomoglo deci da imaju bolje rezultate na testovima kasnije u njihovom životu.