Self-control increases with age, as does the impact of cumulative learning experiences. Some hyperactive children improve as they get older. However, there are also those whose juvenile hyperactivity persists into adulthood.
加上年齡越大克制力越強、學習經驗的回饋性影響，部份過動兒長大後會有改善；但也有部分過了青少年期，過動情況仍然持續。