18F Methods: Decide
The Decide Methods help you derive insights from the information gathered during the Discovery phase. You’ll validate initial assumptions, develop a deeper understanding of workflows and processes, and develop design hypotheses.

The document is a guide to user-centered design methods used in the “Decide” phase, outlining practical instructions, purposes, and steps for techniques such as affinity mapping, personas, journey mapping, service blueprints, and more.
It emphasizes collaborative synthesis of research, actionable insights, and iterative improvement to support effective design decision-making.
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