The testing effect refers to the phenomenon where actively retrieving information from memory during learning enhances long-term retention.

The weather can have an effect on your mood.

The new law will come into effect next month.

The decision had a ripple effect throughout the company, causing changes in various departments.

The medication may have some side effects.

The stage effect was stunning, with vibrant lights and smoke filling the air.

The Dunning-Kruger effect refers to the cognitive bias where people with low ability at a task overestimate their ability.