Final answer:
A need according to Maslow stops motivating when it is substantially satisfied; as one need is met, focus shifts to higher-level needs up to self-actualization and potentially self-transcendence.
Step-by-step explanation:
According to Maslow, a need stops motivating when it is substantially satisfied. This concept is grounded in Maslow's hierarchy of needs, which dictates that basic needs must be met before higher-level needs become motivational drivers. Once a need is substantially satisfied, an individual's focus naturally moves to the next level of needs, continuing up the pyramid towards self-actualization. It's important to note, though, that Maslow later introduced the concept of self-transcendence as a level beyond self-actualization, where motivation might stem from a desire to contribute to a cause greater than oneself.