Affinity – The most useful tool of all

Affinity diagram - Orb showing affinity diagram and post-it notes

Affinity: the simplest & most powerful means of participation

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The Affinity Diagram is one of the Seven Management and Planning Tools and is deceptively simple.
It is a means for looking at patterns and for grouping ideas or topics together into meaningful sets which have the support and agreement of the group.
Also known as ‘silent sorting’ it begins with a mass of sticky-notes or cards distributed randomly across a wall space.
It is most commonly used at the end of a ‘brainstorming’ session where many disparate thoughts have been collected. Each of the thoughts (ideas, issues, activities, …) are written on a separate sticky-note, and these are stuck up randomly on a large flat wall (check this out beforehand – not all wall surfaces work, and not all sticky-notes either). In a virtual meeting environment, the thoughts can be entered as virtual sticky notes, or simply as text spread over the page.
The participants then move one note (or item of text) at a time, in total silence, to place it with other similar notes where they can see some affinity, and away from text where they see no affinity, and this continues until the pattern settles down, at which point the resulting ‘affinities’ or groups of ideas are summarised (not categorised) and labelled.

To work successfully, the tool requires a few simple rules to be rigorously followed.  You might use the following bullet points on a slide to introduce the exercise:

  1. In silence, move one sticky note at a time to create clumps of similar ideas or concepts
  2. You can move any sticky note, but if it is playing yo-yo, try to understand what the other person is trying to achieve, or identify another option
  3. Don’t be held to the patterns and groups you first see, but allow them to evolve
  4. Develop and split the groups so that they can be summarised as clearly focused objectives (eg: “Deliver new products quickly”) not categories
  5. Everybody is to remain fully engaged from the start to the end of the exercise – no drifting out and back in again
  6. No talking, physical violence, or using height advantage
 The key rule is SILENCE. There is no speaking, grunts, sighs, or cheers allowed during the exercise. Silence is important – not being able to explain your own point of view forces you to try and resolve matters by trying to see what the other person is seeing. This rule may seem counterproductive when you have sticky notes playing yo-yo across the wall, and yet that is the time when it is most valuable. People soon get fed up with the futility of moving things forward and backward, and so they try and understand what the other person is trying to achieve (this is their only real option, since they cannot explain what they are trying to achieve). They test this out by trying to find an alternative location or pattern that might meet both their perspectives.
You will also find rule 5 is important. It can be intensely frustrating for a group to spend 5 minutes batting sticky notes to a mutually acceptable configuration, only to have someone saunter over with a cup of coffee to rearrange things.
Once the groups have largely settled down, invite people to speak to resolve the last few issues, and then work through the groups and ask people to summarise the content of each group, and provide this as a label.
In practice allow twenty minutes for an Affinity Diagram, or two hours if you allow people to talk their way through it! You will find that the rules above are likely to be sufficient for most groups. However, you may find that you need to add in various interpretations and new rules from time to time. To help you with this, we have pasted some possible interpretations and rules at the end of this article. You may find it helpful to read through them and to add one or two in verbally as and when you think you need them.
Clicking the instant template below will open up as a live interactive tool in your browser. Simply copy its URL from the address bar on the page that opens and share it through your meeting chat with your team. They will instantly be able to participate with you by: adding their thoughts via sticky notes; seeing all that’s going on, and moving things around. For more on instant templates, click here.

Further rules and interpretations – if required

  • The diagram is to be developed in absolute silence – no speaking, grunts, or even sign-language
  • At the start of the exercise, all items are stuck up by the team in a random arrangement but with clear space between each item (not touching)
  • Anybody can move any item at any time, one item at a time, from one place on the board to another. But always within reach of everyone else (don’t put it too high)
  • Where people believe there is an affinity between two items (something in common) they should overlap them slightly. This becomes the start of a affinity grouping.
  • Affinity groups can grow as more items are overlapped, or shrink as items are moved elsewhere. But in overlapping items be careful not to obscure any text.
  • Groups with no clear space between them become one group. Be careful not to place an item in such a way that it inadvertently makes one group out of two.
  • Groups with a clear space between them become two (or more) groups. Be careful in removing an item you do not orphan other items that should still be part of the original group.
  • If an item is ‘playing ping-pong’ (two or more people keep moving it back) do not break the silence. Instead, seek to try and see what they are seeing and what alternative location or groupings might break the deadlock.
Track your progress to ensure the efficacy of this strategy.