N-back Common working memory task. Several implementations are available. Training may improve other WM tasks and therefore train IQ.<ref>https://www.sciencedirect.com/science/article/pii/S0749596X18300871?via%3Dihub</ref> | N-back Common working memory task. Several implementations are available. Training may improve other WM tasks and therefore train IQ.<ref>https://www.sciencedirect.com/science/article/pii/S0749596X18300871?via%3Dihub</ref> |