Which stage in the design process does feedback primarily influence?

Feedback plays a critical role in the design evaluation stage of the design process. During this phase, designers review and critique their work based on various inputs and assessments from users, clients, and stakeholders. This feedback is essential for identifying strengths and weaknesses in the design, leading to improvements and iterations that enhance the product's overall effectiveness and user satisfaction.

The design evaluation stage is focused on assessing how well the design meets the intended requirements and objectives, as well as gathering insights on usability and functionality. By incorporating feedback, designers can make informed decisions about necessary modifications, ensuring that the final product aligns with user needs and expectations.

In contrast, while concept development may involve initial ideas and brainstorming, it does not focus heavily on feedback since it is predominantly about generating and refining ideas. Production planning and marketing strategy are more about implementation and promotion rather than the critical assessment of a design’s effectiveness through feedback. Thus, feedback is most influential during the design evaluation phase, where it directly impacts the outcome of the design process.