Свои умственные способности можно несколько улучшить, если позволять себе время от времени маленькие удовольствия: это, возможно, объясняет, почему дети из более бедных семей обычно учатся хуже в школе.
Their mental abilities you can improve, if from time to time allow ourselves a little fun: this may explain why children from poorer families usually learn worse in school.
His mental abilities can be somewhat improved by allowing himself from time to time a little fun: it may explain why children from poorer families usually learn less in school.
their mental ability can improve somewhat, if let myself from time to time a little pleasure, this may explain why children from poorer families generally are worse in school.