Continuum Line

Purpose

The Continuum Line (also called Human Barometer or Opinion Line) is a fast, visual way to gauge where a group stands on a question. Participants place themselves along a line from one extreme to another, making the distribution of attitudes immediately visible. It works as a check-in, a decision-support tool, or a discussion opener.

At a glance

How to run

1. Define the poles (1 min): Label two ends of a line (e.g., "Strongly agree" / "Strongly disagree", or "Not ready" / "Fully ready").
2. Pose the statement (1 min): Read a statement or question clearly.
3. Position (2 min): Participants stand on the line (or place a marker digitally).
4. Interview (7 min): Ask 2–3 people from different positions to explain their choice.
5. Reflect (4 min): What does the distribution reveal? Are there clusters? Outliers? What would shift the outliers?

Materials needed

• Floor tape or rope for a physical line
• Pole labels
• Digital slider or board for remote

Pitfalls & common mistakes

• Herding: People cluster near others. Ask participants to commit before looking at neighbours.
• No follow-up questions: The value is in the reasoning, not the position.
• Too many rounds: Keep to 2–3 statements to maintain energy.

Inclusion & accessibility

• Offer seated alternatives (numbered cards held up).
• Digital tools work for remote and mobility-impaired participants.
• Allow repositioning after discussion.

Variations

• Walking Continuum: Participants walk the line slowly, pausing where they feel right.
• Double Continuum: Two lines crossing to create a 2D positioning (like a matrix).
• Anonymous Continuum: Digital sliders for sensitive topics.

When NOT to use this

• When the topic is too sensitive for public positioning.
• When the group is too small to form a meaningful distribution.
• When the question cannot be placed on a linear scale.

Source & further reading

• Classic facilitation technique
• Augusto Boal, *Games for Actors and Non-Actors* (adapted)
• Gamestorming: Continuum