Teamwork Troubles? The Surprising Truth About Self-Selected Groups
"Why choosing your own teammates might not be the best strategy for success – and what you can do about it."
Teamwork is the backbone of countless endeavors, from academic projects to corporate strategies. The conventional wisdom suggests that allowing individuals to choose their teammates fosters stronger connections, increased motivation, and ultimately, better outcomes. After all, who wouldn't prefer working alongside friends or like-minded colleagues?
However, a recent study throws a wrench into this seemingly foolproof plan. Researchers Julius Düker and Alexander Rieber from Ulm University investigated the impact of self-selected versus randomly assigned groups in a classroom setting. Their findings challenge the notion that self-selection automatically leads to superior performance.
The results, published in a working paper, reveal a fascinating paradox: while students in self-selected groups reported higher satisfaction and knowledge acquisition, their actual performance on group assignments lagged behind that of randomly assigned teams. This raises a critical question: why does choosing our own teammates sometimes backfire, and what can we do to create more effective collaborations?
Everyday Experience as the Foundation
A 2026 guide from Asana identifies 11 benefits of workplace teamwork, citing better communication, trust, problem solving, and organizational culture as key outcomes, alongside seven practical ways to build stronger teams. That source frames teamwork's value largely through everyday work practice rather than through formal experimental milestones or foundational studies. In this practitioner view, the recognized value of teamwork has accumulated into widely repeated lists of benefits and tactics. Such guides suggest that the conceptual foundation for team-based work is largely experiential and prescriptive rather than grounded in a distinct historical discovery.
The Self-Selection Paradox: Why Choosing Friends Can Hinder Performance
Düker and Rieber's experiment involved students in a compulsory undergraduate data analysis course. Over two consecutive semesters, students were either allowed to self-select their groups or were randomly assigned to teams of three. The researchers then meticulously tracked group performance on data science projects, individual learning through final exams, and student satisfaction via surveys.
- Lower Performance: Self-selected groups scored significantly lower on group assignments.
- Higher Satisfaction: Students in self-selected groups reported greater satisfaction and a more positive perception of their group's effectiveness.
- Increased Learning: Individuals in self-selected groups demonstrated higher knowledge acquisition, as measured by final exam scores.
Self-Selected Versus Assigned Teams
Head-to-head comparisons between self-selected and assigned or randomized groups are uncommon in the material available, so any generalization needs caution. Trade-offs are typically framed in terms of comfort and motivation on one side versus equity and skill-balancing on the other. Self-selection may improve initial rapport and accountability, while assigned or structured groupings may better ensure diverse perspectives and fair workload distribution. In the absence of robust comparative evidence, recommended practice tends to favor intentional formation rules over leaving group composition entirely to chance.
Rethinking Team Formation: Strategies for Success
The research by Düker and Rieber offers valuable insights for anyone involved in forming or managing teams. While self-selection can boost satisfaction and create a more positive learning environment, it's crucial to be aware of its potential drawbacks on overall performance. By understanding the dynamics at play and implementing strategies to mitigate the risks of homogeneity, we can unlock the true potential of collaborative work.
People Over Procedure
At the human level, teamwork is ultimately about relationships, trust, and how people experience collaboration day to day. Even well-composed groups can falter without psychological safety, mutual support, and a sense of shared purpose, which are qualities no formation method guarantees. The real-world impact shows up in engagement, learning outcomes, and whether people actually want to work together again. This suggests that the formation decision matters less than the ongoing human experience of working as a team.