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Tuckman's Stages is a five-stage model of group development in which teams progress sequentially through forming, storming, norming, performing, and adjourning. Proposed by Bruce Tuckman in 1965 and extended in 1977, it maps the interpersonal and task behaviours characteristic of each phase, giving leaders a framework for diagnosing team maturity and adapting their approach.
The model is also referred to by its four original stages alone (forming, storming, norming, performing), as adjourning was added in a 1977 extension.
How it works
In the forming stage, group members orient themselves to the task and to each other, testing boundaries and relying on the leader for direction and structure.1 Storming follows as members assert their perspectives, generating intragroup conflict around relationships and task approach. Tuckman identified this conflict as necessary: it is the mechanism by which individuals begin to function as a coherent group.1
Norming sees the group develop shared standards and genuine cohesion, with members adopting complementary roles and building the normative infrastructure that enables effective collaboration.12 Performing is the stage of functional role relatedness, where structural tensions resolve and energy redirects towards the task itself.12 Groups in the performing stage operate with a degree of autonomy that makes close supervision counterproductive.
The fifth stage, adjourning, was added by Tuckman and Jensen in 1977 to capture the dissolution of group relationships following task completion.2 Where a project team disbands at a defined endpoint, the adjourning stage provides a framework for acknowledging achievement and managing the emotional transition out of a high-performing configuration.
Example
A newly assembled cross-functional team tasked with launching a product line spends its first weeks in polite agreement and high uncertainty: this is forming. When competing priorities surface and two senior members begin lobbying for different technical approaches, the team enters storming. A facilitator who recognises this names the conflict explicitly, structures the disagreement, and moves the group towards agreed working norms rather than allowing it to stall.
Naming the stage to a team reframes tension as progress, which is often enough to move the group through storming and into norming.
Why it matters
Tuckman's model gives leaders a predictive vocabulary for group behaviour. Without it, a manager encountering heavy conflict in an early-stage team will often misread storming as a personnel problem rather than a developmental phase, and respond with interventions (reassignment, escalation, enforced consensus) that suppress the conflict rather than process it. Bonebright's review found that unmanaged storming correlates negatively with group performance, while successful navigation of the norming stage is among the strongest positive predictors of a team reaching the performing stage.3
A practical limitation to hold in mind: Tuckman's original 1965 synthesis drew heavily on therapy groups and training laboratories rather than workplace project teams, which constrains direct generalisation.3 The sequence is also not strictly linear; teams can cycle back through storming after significant membership changes or a major goal shift. The model is most useful as a diagnostic heuristic, not a rigid roadmap.
What are the five stages of Tuckman's model?+
Tuckman's model comprises forming (orientation and leader dependence), storming (intragroup conflict and resistance), norming (cohesion-building and shared standards), performing (task-focused functional collaboration), and adjourning (group dissolution following task completion). The first four stages were proposed in 1965; adjourning was added in a 1977 extension co-authored with Mary Ann Jensen.
Why is the storming stage necessary for team performance?+
Storming forces the unresolved tensions in a new group into the open. Groups that avoid or suppress conflict in order to maintain surface harmony, a pattern sometimes called false norming, often stall before they reach the high-output performance characteristic of the performing stage.
How should a leader's style change across Tuckman's stages?+
Directive leadership suits forming, where members need structure and clarity. Coaching and facilitation are most effective through storming. By performing, a delegation-heavy approach gives the team the autonomy it has earned. Young confirmed that leaders who adapt their style to each stage accelerate development and reduce the risk of stalling.{{cite:10.1177/23792981231170617}}
Do all teams progress through Tuckman's stages in a fixed order?+
Not necessarily. Although the model describes a sequential arc, teams can cycle back through earlier stages after significant membership changes, a major goal shift, or an external disruption. Bonebright's review found that roughly half of groups in the original studies either skipped or abbreviated the storming phase.
