Which term describes a creative brainstorming tool that is more restrictive than another method?

The term that describes a creative brainstorming tool that is more restrictive than another method is best represented by the nominal groups compared to the Delphi technique.

Nominal groups involve a structured process where participants generate ideas individually and then come together to discuss and prioritize those ideas in a regulated manner. This method limits the flow of ideas directly during the initial phase to ensure everyone has an equal opportunity to participate and express their views. It is particularly useful in gathering opinions while maintaining control over the discussion and ensuring balanced participation.

In contrast, the Delphi technique is a more open-ended and iterative process. It often involves multiple rounds of anonymous feedback from a group of experts who provide their insights and responses to questions, which allows for broader participation and the refinement of ideas over time. The Delphi technique is designed to achieve consensus but is less restrictive in its method, allowing contributors to express their thoughts outside of a group setting, which can lead to a more diverse range of ideas.

Therefore, nominal groups can be considered more restrictive than the Delphi technique, making this option the correct choice in the context of comparing brainstorming methodologies.