1. More to the point, the study looked at what the impulse is when people want to remember something.

2. For some veterans, those images have fueled an impulse to head back and finish the mission.

3. With unlimited shipping, it seems that Amazon encourages impulse buying by its Prime members.

4. He also was flagged by a psychologist as having impulse control issues.

5. I applaud your impulse to help and to smile and nod.