Feature focusing
Feature focusing is a kind of instructional treatment. The key idea is that instruction that guides the learner's attention ("focuses") toward relevant features should lead to more robust learning than unfocused instruction or instruction that guides attention toward on irrelevant features.
Feature focusing instruction may help students to learn knowledge components with higher feature validity.
More generally, attention focusing may also result in students spending more time during a learning event on a particular knowledge component and thus increase its strength.