# Time and Transition in Work Teams: Toward a New Model of Group Development

*Gersick · Team Learning, Critique & Boundary, Complexity & Systems · Academy of Management Journal · 1988 · Paywalled*

The paper that broke the stage model of group development, and the source this map's critique of Tuckman has been arguing without. Gersick followed eight real project teams through their entire lives, from first meeting to final deliverable, attending every meeting and transcribing all of them: graduate student project groups, a community fundraising committee, a bank task force and a group of hospital administrators among them, drawn from six organisations, with life spans running from seven days to six months. She had expected the familiar sequence of stages and found nothing of the kind. No single developmental model fitted all the teams, and activities that theory described as sequential were in some groups simultaneous or reversed.

What she found instead was a pattern of timing. Every group settled on an approach to its task almost immediately, in its first meeting, through premises that were rarely stated and were established mostly by what got said and done repeatedly. That framework held through a period of inertia lasting half the group's calendar time. At the midpoint every group underwent a concentrated transition: it dropped its old approach, re-engaged with outside supervisors and stakeholders, and made a marked jump in progress, before a second inertial phase carried the new plan to a final burst of completion. The midpoint fell halfway between first meeting and deadline regardless of how long the project ran, which is what makes the finding hard to explain away, and it was triggered by members' awareness of time rather than by how much work was finished. Gersick reads this as punctuated equilibrium, borrowed from Eldredge and Gould: long inertia broken by short revolutions.

The distinction from Tuckman is not cosmetic. A stage is a type of behaviour every group passes through in the same order. What Gersick identified were temporal phases, bounded eras containing different activities in different groups, not progressing hierarchically. Her own image is a football match structured by quarters and a half time rather than by a characteristic sequence of styles of play.

Read the design for what it is. Eight groups is a small and deliberately non-random sample, chosen so that every meeting could be observed, and three of the first four came from the same university. The model was built by grounded theory after the fact, from a study begun for another purpose, and she stopped at eight because the results were consistent rather than because saturation was tested. Psychological safety appears nowhere, which is chronology rather than oversight, and the bridge is the first meeting: if a group's framework is set implicitly in its opening minutes and then held for half the project, the conditions for speaking up are laid down before anyone has decided to lay them down, and the midpoint is the one moment this evidence says a team is reliably open to revising them.

- **This page:** https://explore.psychsafety.com/n/gersick-1988/
- **View the source paper:** https://doi.org/10.2307/256496
- **Interactive map:** https://explore.psychsafety.com/?mode=papers&node=gersick-1988

## Neighbours (6)

- [A Temporally Based Framework and Taxonomy of Team Processes](https://explore.psychsafety.com/n/marks-mathieu-zaccaro-2001.md) (paper)
- [High Performing Teams](https://explore.psychsafety.com/n/high-performing-teams.md)
- [Team Charters](https://explore.psychsafety.com/n/psychological-safety-80-team-charters.md)
- [Information Sharing and Decision-Making in Multidisciplinary Crisis Management Teams](https://explore.psychsafety.com/n/uitdewilligen-waller-2018.md) (paper)
- [Setting the Tone: Early Interaction Patterns in Swift-Starting Teams as a Predictor of Effectiveness](https://explore.psychsafety.com/n/zijlstra-waller-phillips-2012.md) (paper)
- [Tuckman's Model](https://explore.psychsafety.com/n/psychological-safety-88-tuckmans-model.md)