Final answer:
The statement is true; there is no guarantee that helpful ideas will surface during the incubation stage of creativity, as the process is unpredictable and varies between individuals.
Step-by-step explanation:
True. There is no guarantee that helpful ideas will come to mind during the incubation stage of creative performance. The incubation stage is part of the four-stage model of creativity, which includes preparation, incubation, illumination, and verification. Throughout the incubation stage, a person takes a break from active problem-solving efforts, which allows for subconscious processing. This can lead to moments of insight, known as 'aha' moments, but such outcomes are not a certainty. The process is unpredictable and can vary greatly from individual to individual. External factors, such as environment and personal stress levels, can also impact this creative process, making it even less predictable. Therefore, while the incubation stage can often be a fertile time for ideas to develop subconsciously, it is not a guaranteed outcome for every instance of creative endeavor.