The affinity diagram is a participatory activity that organizes a set of ideas, data, or concepts into categories based on similarities or affinities. This tool encourages collective analysis, facilitates the identification of key patterns, and helps structure complex information, promoting informed and consensus-based decision-making.
Preparation
- Define the purpose:
- Establish the objective of the activity, such as analyzing a problem, organizing ideas from a brainstorming session, or categorizing project information.
- Gather materials:
- Sticky notes or index cards.
- Colored markers.
- Large paper or a smooth surface to place the notes (this could be a wall or a whiteboard).
- Set the focus:
- Define a central theme or guiding question to orient the activity (e.g., “What are the main challenges of this project?”).
Step-by-step instructions
- Introduce the purpose
- Explain the goal of the diagram and how it helps organize ideas.
- Present the topic or guiding question that the group will analyze.
- Generate individual or group ideas
- Invite participants to write down ideas, problems, suggestions, or data related to the topic on sticky notes, one idea per note.
- Allow 5 to 10 minutes for participants to write as many ideas as possible.
- Initial grouping
- Participants place their notes on a common surface (whiteboard, wall, or large table).
- Work as a group to move the notes around and cluster them based on similarities or affinities.
- Encourage discussion and negotiation among participants if there are disagreements about note placements.
- Create categories
- Once ideas are grouped, assign a name or title to each cluster, reflecting the common theme.
- Use colored markers or labels to highlight the created categories.
- Collective analysis
- Reflect with the group on the emerging categories and the relationships between them.
- Ask questions such as:
- What patterns do we observe?
- Which categories seem most relevant or critical?
- What areas need more attention or further exploration?
- Synthesis and prioritization
- Prioritize key categories according to the objective of the exercise.
- Summarize key findings and conclusions in a document or take a photo of the diagram.
- Closure and next steps
- Thank participants and define how the categorized information will be used for the next steps in the project or analysis.
















