The Ringelmann effect is the tendency for each member’s output to fall as a group gets bigger, so a team produces less than the sum of what its members could do alone. It is named after Max Ringelmann, a French agricultural engineer who gathered data on workers pushing and pulling loads in the 1880s and published it in 1913. He put the loss down mainly to poor coordination; later researchers showed that falling motivation, which they called social loafing, adds to it.
Ringelmann compared how much force workers produced alone and in groups when pushing or pulling a load horizontally. Group performance fell short of the sum of individual efforts.
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Coordination loss
Ringelmann explained the shortfall mainly by coordination: people in a group do not push or pull at exactly the same moment or in the same direction, although he was also aware of motivational factors (Kravitz and Martin, 1986).
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Motivation loss, or social loafing
In 1979 Latanรฉ, Williams and Harkins found that people clapping and shouting in groups made less effort than alone, a drop they named social loafing and showed was in addition to coordination losses (Latanรฉ et al., 1979).
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What makes it bigger or smaller
A review of 78 studies found that loafing is robust, and that evaluation potential, expectations of co-worker performance, task meaningfulness and culture strongly change its size (Karau and Williams, 1993).
Where you see it today
Amazon's two-pizza teams
Amazon’s rule is that no team should be bigger than two pizzas can feed, ideally fewer than 10 people. AWS describes small teams as a way to cut communication lines and bureaucracy and to mitigate the Ringelmann effect.
Teams of AI agents
Groups of AI agents show their own coordination losses. A study of multi-agent systems built on large language models found 14 failure modes in three categories, including inter-agent misalignment, and noted that gains over single agents on benchmarks are often minimal (Cemri et al., 2025).
One person plus AI vs a team
In a field experiment with 776 professionals at Procter & Gamble, individuals working with AI matched the performance of two-person teams working without it (Dell’Acqua et al., 2025). As we read it, AI lets some work be done by smaller groups, which avoids part of the Ringelmann loss.
When people work harder in groups
The effect is not universal. People worked harder collectively than alone when they expected a co-worker to perform poorly on a meaningful task, a pattern called social compensation (Williams and Karau, 1991).
Ringelmann effect vs related ideas
Ringelmann effect
What it describesOutput per person falls as group size grows
Main causeCoordination loss plus motivation loss
Social loafing
What it describesPeople make less effort when their inputs are pooled
Main causeMotivation: effort is less visible or less needed
Social compensation
What it describesPeople work harder to make up for a weak co-worker
Main causeA meaningful task and low expectations of others
Free rider problem
What it describesSome members benefit without contributing
Main causeRewards that do not depend on one's own input
Brooks's law
What it describesAdding people to a late software project makes it later
Main causeTraining and communication overhead
How to spot and avoid it
Keep teams small enough that everyone's contribution is visible; split large groups into smaller units with clear owners.
Make individual inputs identifiable and reviewable, not only the group result.
Give the task a clear purpose: loafing is weaker on work people find meaningful.
Reduce coordination cost with clear roles, interfaces and handoffs before adding people.
Before adding another person or another AI agent, check whether one person working with AI could do the job.
The Business Engineer lens
AI changes the arithmetic of team size: when one person with AI can match a small team, the coordination and motivation losses of larger groups become a direct cost. The Business Engineer’s view is that AI-native teams should be designed small by default, with agents added only where their coordination cost is lower than the work they remove.
The complete explainer, cleaned up and reformatted for mobile.
The Ringelmann effect describes the tendency for individuals within a group to become less productive as the group size increases.
Definition
ExplanationThe Ringelmann Effect, named after French engineer Max Ringelmann, refers to the phenomenon where individuals in a group exhibit reduced effort or productivity compared to when they work independently. It highlights a decrease in individual performance within a group context.
Key Concepts
Explanation1. Social Loafing: Social loafing is the core concept of the Ringelmann Effect, describing the tendency of individuals to “loaf” or contribute less effort when they believe their individual efforts are less noticeable or critical in a group setting.
Explanation2. Decreasing Marginal Contribution: As the size of a group increases, individuals tend to perceive that their contribution is less important, leading to a decline in their motivation and effort.
Explanation3. Coordination Loss: Group tasks often require coordination among members. When coordination becomes challenging, it can lead to inefficiencies and decreased productivity.
Explanation4. Free-Riding: Some individuals may “free-ride” on the efforts of others within the group, assuming that their minimal contribution won’t significantly affect the group’s outcome.
Causes
Explanation1. Diffusion of Responsibility: In larger groups, individuals may feel less responsible for the group’s success or failure, assuming others will compensate for their lack of effort.
Explanation2. Evaluation Apprehension: Fear of evaluation by peers can lead individuals to withhold effort to avoid scrutiny or judgment.
Explanation3. Lack of Identifiability: When individual contributions are not easily distinguishable in a group, people may feel less accountable for their efforts.
Explanation4. Task Difficulty: If tasks are perceived as too challenging or complex, individuals may reduce their effort as a coping mechanism.
Examples
Explanation1. Group Projects: In educational settings, students working on group projects may not contribute equally. Some may rely on the work of a few diligent members.
Explanation2. Workplace Teams: Within teams or departments in organizations, employees may vary in their level of engagement and effort, especially if they perceive their work as less significant.
Explanation3. Sports Teams: Athletes in team sports may exhibit reduced effort when they believe their individual performance is less critical to the team’s success.
Explanation4. Volunteer Activities: In volunteer groups, some participants may contribute less, assuming others will fill the gaps.
Consequences
Explanation1. Decreased Productivity: The Ringelmann Effect can lead to reduced overall productivity and poorer outcomes for group tasks.
Explanation2. Frustration and Discontent: High-performing group members may become frustrated with low contributors, leading to interpersonal conflicts.
Explanation3. Lower Motivation: If individuals consistently experience social loafing, their motivation to participate in group activities may diminish.
Explanation4. Weaker Group Cohesion: Reduced effort and productivity can weaken the sense of group cohesion and camaraderie.
Mitigation Strategies
Explanation1. Clearly Defined Roles: Assign specific roles and responsibilities to each group member to clarify expectations.
Explanation2. Individual Accountability: Ensure that individual contributions are visible and measurable.
Explanation3. Monitoring and Feedback: Regularly assess and provide feedback on individual and group performance.
Explanation4. Smaller Groups: When possible, consider smaller group sizes to reduce the likelihood of social loafing.
Conclusion
ExplanationThe Ringelmann Effect underscores the importance of understanding group dynamics and motivation in various contexts. By addressing the causes and consequences of social loafing, organizations, educators, and team leaders can take steps to mitigate its impact and promote higher individual and group performance.
Understanding the Ringelmann effect
The Ringelmann effect was first identified by French agricultural engineer Max Ringelmann.
To determine how agricultural workers could maximize their productivity, Ringelmann conducted a series of now landmark experiments.
In one experiment, he measured the pulling power of a group of individuals with a pressure gauge mounted to a rope.
Ringelmann discovered that as more people were added to pull the rope, the more each individual would perform below their potential.
In explaining his results, Ringelmann noted two contributing factors:
Motivation decreased when more people shared responsibility for a task
He explained in his research that this was due to each man โtrusting his neighbour to furnish the desired effort.โ
Inefficiencies increased due to a lack of task and effort coordinating among individuals
This is commonly seen in sports where a coordinated champion team performs better than an uncoordinated team of champions.
Further causes of the Ringelmann effect
Many have researched the causes of the Ringelmann effect in more detail since it was first described in the early part of the 20th century.
Two other causes are explained below.
Co-worker performance expectations
Research in the 1980s and 1990s found expectations of co-worker performance can also explain the Ringelmann effect.
Social loafing was found to be common in groups consisting of high achievers since individuals saw an opportunity to become lazy and let others do the work.
When the group was comprised of low-achieving individuals, however, the reverse was found to be true.
The phenomenon where an individual increases their output to compensate for the lower output of others is known as the social compensation hypothesis.
Evaluation potential
The Ringelmann effect is also caused by evaluation potential, or a lack thereof.
Essentially, the reduction in output for collective tasks occurs because people can avoid being evaluated in isolation as part of a group.
When allowed to hide in the crowd, as it were, people are prone to reducing their effort.
How can the Ringelmann effect be avoided?
With that said, there are also some more formal ways the Ringelmann effect can be avoided:
Social capital
While easier said than done, businesses can increase team collaboration by creating a workplace culture where trust, shared values, and mutual understanding are prioritized.
Recruiting employees who interact well with others is also important.
Task designation
When employee names are designated to specific project tasks, individual and thus team performance improves.
This strategy takes advantage of evaluation apprehension, a phenomenon where people are preoccupied with how others perceive them and act to avoid judgement.
Recognize contributions
Positive reinforcement can also be an effective strategy in combating the Ringelmann effect.
Individuals should be acknowledged or even celebrated for their contributions, preferably in a public context.
Case studies
Software Development Teams: In a large team working on software development, some developers might contribute less code or test fewer cases, thinking their peers will cover essential aspects. Smaller, more agile teams might see each developer taking more responsibility.
Marketing Campaign Brainstorms: During a brainstorming session for a new marketing campaign, if the team is too large, some members might withhold their creative ideas, thinking that others will have sufficient input. On the other hand, smaller brainstorming groups might generate more active participation from each member.
Sales Teams: In a large sales team with a collective target, some salespeople might not pursue leads as aggressively, thinking their colleagues will make up for it. In contrast, individual targets or smaller teams can drive each salesperson to give their best.
Corporate Strategy Meetings: In strategy planning meetings with many attendees, some executives might stay silent, assuming that their insights or objections might not matter amidst the many voices. Smaller, focused strategy groups might elicit more comprehensive input from each participant.
Customer Support Teams: In large customer service departments, some representatives might not be as diligent in resolving issues, thinking other team members will handle challenging cases. This can lead to decreased customer satisfaction.
Product Design Workshops: In workshops intended to design or improve a product, some designers might hold back on giving critical feedback or innovative ideas if the group is too large, assuming the primary voices will dominate.
Quality Control Teams: In large quality control teams for manufacturing, some inspectors might occasionally skip steps, assuming errors will be caught by others in the team. This can lead to inconsistent product quality.
Research and Development (R&D): In a vast R&D department, some researchers might delay their projects or not pursue innovative avenues, thinking their contribution might be less noticeable among the many projects. Smaller R&D teams often see each researcher being more proactive and accountable.
Financial Audit Teams: In large audit teams, some auditors might not scrutinize every transaction detail, relying on the sheer number of auditors to catch discrepancies. This could lead to oversight in financial reports.
Employee Training Programs: In large training sessions, some attendees might not participate actively in discussions or exercises, thinking their participation might not be missed. Smaller, more intimate training groups can encourage more active involvement from each participant.
Sports: In basketball, a team of five-star players may not necessarily play to their full potential individually when compared to a situation where they are the only star on the team. They might assume others will pick up the slack, leading to suboptimal team performance.
Group Projects at School: Students in a group project might experience the Ringelmann effect when one or two members decide to contribute less, assuming others will cover for them. A group of four might end up with the workload effectively carried by just two or three members.
Office Meetings: In large team meetings, you might notice fewer individuals participating in the discussion. This can be attributed to the Ringelmann effect, where people feel their contribution might not be as significant or noticeable in a larger setting.
Community Volunteering: In community clean-up efforts, if a large group gathers, some individuals might reduce their cleaning efforts, thinking there are enough people to handle the task. But if only a few volunteers show up, each one might work harder and be more thorough.
Choir Performance: If a choir group is too large, some members might not sing as loudly or clearly, assuming their voice won’t be distinctly heard among the many. However, in a smaller group or a solo performance, each member gives their best.
Factory Assembly Lines: In a large assembly line with many workers, some might reduce their pace or effort assuming others will cover for any slack. This can reduce the overall efficiency of the production process.
Research Teams: In a large research group, some scientists might contribute less, thinking their input might not be as crucial. But in smaller research teams, each scientist often takes more responsibility, leading to more significant contributions.
Fitness Classes: In a large Zumba or aerobics class, some participants might not give their full effort, thinking the instructor won’t notice. But in smaller classes, each participant might be more motivated to follow the moves accurately.
Online Collaborative Platforms: On platforms like Wikipedia, if too many contributors are editing a page, some might reduce their contributions, assuming others will correct or improve the content.
Emergency Situations: In scenarios where a large crowd witnesses an accident, the Ringelmann effect can be seen when many assume someone else will call for help or provide first aid. This is often related to the “bystander effect.”
Key takeaways
The Ringelmann effect describes the tendency for individuals within a group to become less productive as the group size increases.
The Ringelmann effect is primarily driven by two factors. The first is a decrease in motivation that occurs when more people share responsibility for a task. The second is inefficiencies that result due to a lack of task coordination.
The Ringelmann effect can be mitigated by creating a company culture where teamwork is prioritized, designating specific tasks to individuals, and celebrating their contributions to the group.
Key highlights of the Ringelmann Effect
Definition of the Ringelmann Effect: The Ringelmann Effect refers to the tendency for individuals within a group to become less productive as the group size increases.
Origins and Discoverer: The effect was first identified by French agricultural engineer Max Ringelmann, who conducted experiments on agricultural workers and found that their pulling power decreased as more individuals were added to the task.
Contributing Factors: Two primary factors contribute to the Ringelmann Effect: decreased motivation when more people share responsibility for a task and inefficiencies due to a lack of task coordination among group members.
Co-worker Performance Expectations: Research has shown that expectations of co-worker performance can influence the Ringelmann Effect.
Evaluation Potential: The Ringelmann Effect can also be caused by evaluation potential, where individuals reduce their effort when they can avoid being evaluated in isolation as part of a group.
Avoiding the Ringelmann Effect: Strategies to mitigate the Ringelmann Effect include fostering social capital and teamwork through a positive workplace culture, designating specific tasks to individuals, and recognizing and celebrating individual contributions in a public context.
Task Designation and Evaluation Apprehension: Designating individual names to specific project tasks can improve individual and team performance by leveraging evaluation apprehension, where people act to avoid judgment from others.
Recognizing Contributions: Positive reinforcement, such as acknowledging and celebrating individual contributions, can be effective in countering the Ringelmann Effect and promoting higher individual engagement within the group.
Ringelmann Effect
DescriptionThe Ringelmann Effect is a phenomenon where individuals in a group tend to exert less effort or perform worse than when working alone. It suggests that as group size increases, coordination problems, social loafing, and diffusion of responsibility can lead to decreased individual effort or productivity. The Ringelmann Effect highlights the importance of group dynamics, leadership, and accountability in achieving optimal performance in team settings. It involves recognizing the potential pitfalls of group work, such as free riding, social comparison, and coordination costs, and implementing strategies to mitigate the negative effects, such as setting clear goals, roles, and expectations, fostering communication and collaboration, and providing feedback and recognition for individual contributions.
When to Apply– When managing teams or collaborative projects to maximize productivity and performance. – Particularly in understanding the dynamics of group behavior, such as social facilitation, social loafing, and groupthink, and in exploring techniques to address the Ringelmann Effect, such as team building, goal setting, and performance evaluation, to enhance team effectiveness, optimize resource utilization, and achieve collective goals in team management or organizational leadership initiatives.
Social Loafing
DescriptionSocial Loafing is a phenomenon where individuals exert less effort or contribution to a group task compared to when they work alone. Social loafing occurs due to diffusion of responsibility, reduced accountability, and the belief that individual efforts will not be recognized or rewarded in a collective setting. It undermines group performance, cohesion, and motivation, leading to suboptimal outcomes and wasted resources. Social loafing can be mitigated by promoting individual accountability, fostering a sense of ownership and commitment to shared goals, and providing opportunities for meaningful participation, recognition, and feedback within the group.
When to Apply– When assessing team dynamics or identifying performance barriers in group projects or collaborative environments. – Particularly in understanding the causes and consequences of social loafing, such as group size, task interdependence, and individual motivation, and in exploring techniques to combat social loafing, such as role clarity, performance monitoring, and peer evaluation, to promote collective effort, enhance team synergy, and improve overall productivity in team management or organizational development initiatives.
Groupthink
DescriptionGroupthink is a psychological phenomenon where group members prioritize harmony and consensus over critical thinking and independent evaluation of ideas or alternatives. Groupthink can lead to flawed decision-making, poor judgment, and missed opportunities as dissenting views are suppressed or ignored in favor of group consensus. It occurs due to group cohesion, pressure for unanimity, and the desire for acceptance or approval within the group. Groupthink can be mitigated by encouraging diversity of perspectives, fostering open communication and constructive debate, and empowering individuals to voice dissenting opinions or alternative viewpoints without fear of reprisal.
When to Apply– When evaluating decision-making processes or preventing group errors in team-based projects or organizational decision-making. – Particularly in understanding the symptoms and antecedents of groupthink, such as group cohesion, directive leadership, and insulation from external inputs, and in exploring techniques to mitigate groupthink, such as devil’s advocacy, structured debate, and decision-making frameworks, to promote critical thinking, innovation, and effective decision-making in group collaboration or leadership development initiatives.
Team Cohesion
DescriptionTeam Cohesion refers to the degree of unity, camaraderie, and mutual trust among members of a team. Cohesive teams exhibit strong interpersonal bonds, shared goals, and effective communication, leading to higher morale, satisfaction, and performance. Team cohesion enhances collaboration, coordination, and resilience in overcoming challenges or setbacks, fostering a positive team culture and sense of belonging. It involves building rapport, establishing common goals, and nurturing supportive relationships among team members through team-building activities, shared experiences, and open dialogue.
When to Apply– When developing high-performing teams or enhancing team dynamics in collaborative projects or organizational initiatives. – Particularly in understanding the factors influencing team cohesion, such as shared identity, task interdependence, and leadership style, and in exploring techniques to build team cohesion, such as team bonding exercises, communication training, and conflict resolution, to foster trust, collaboration, and synergy among team members in team development or organizational culture initiatives.
Task Interdependence
DescriptionTask Interdependence refers to the degree to which the success or completion of one task depends on or affects the success or completion of other tasks within a team or organization. Task interdependence influences team coordination, communication, and collaboration, shaping how resources are allocated, goals are achieved, and outcomes are shared among team members. There are various types of task interdependence, including pooled, sequential, reciprocal, and comprehensive interdependence, each requiring different levels of coordination, cooperation, and integration among team members. Understanding task interdependence helps teams design workflows, allocate responsibilities, and optimize processes to achieve collective goals and maximize performance.
When to Apply– When designing workflows or allocating responsibilities in team-based projects or organizational processes. – Particularly in understanding the types and implications of task interdependence, such as resource dependencies, information flows, and coordination requirements, and in exploring techniques to manage task interdependence, such as task structuring, role clarification, and cross-functional collaboration, to enhance team efficiency, effectiveness, and adaptability in project management or organizational design initiatives.
Group Dynamics
DescriptionGroup Dynamics refers to the patterns of interactions, behaviors, and relationships that emerge within a group or team over time. Group dynamics encompass various factors, such as communication styles, leadership dynamics, power structures, and social norms, which influence how members perceive, interact, and collaborate with one another. Understanding group dynamics helps leaders and team members navigate interpersonal relationships, resolve conflicts, and leverage collective strengths to achieve common goals and objectives. It involves recognizing group roles, norms, and decision-making processes and fostering a positive group climate conducive to collaboration, innovation, and performance excellence.
When to Apply– When assessing team performance or managing group interactions in team-based projects or organizational initiatives. – Particularly in understanding the drivers and consequences of group dynamics, such as cohesion, conformity, and conflict, and in exploring techniques to improve group dynamics, such as team-building exercises, conflict resolution strategies, and leadership development, to enhance team effectiveness, cohesion, and resilience in team management or organizational development initiatives.
Leadership Styles
DescriptionLeadership Styles refer to the approach, behaviors, and strategies used by leaders to influence and guide individuals or groups toward achieving organizational goals and objectives. Leadership styles can vary along dimensions such as task orientation, relationship orientation, autocratic versus democratic decision-making, and transformational versus transactional leadership. Effective leadership involves adapting leadership styles to fit the situational context, team dynamics, and organizational culture, fostering trust, motivation, and performance among followers. It involves developing self-awareness, emotional intelligence, and interpersonal skills to inspire, empower, and engage team members in pursuit of shared visions and aspirations.
When to Apply– When leading teams or inspiring organizational change in diverse settings or contexts. – Particularly in understanding the characteristics and impacts of different leadership styles, such as situational leadership, servant leadership, and authentic leadership, and in exploring techniques to develop leadership effectiveness, such as leadership assessments, coaching, and feedback, to build leadership competencies, drive team performance, and cultivate organizational excellence in leadership development or talent management initiatives.
Performance Evaluation
DescriptionPerformance Evaluation is the process of assessing and reviewing an individual’s or team’s performance against predetermined goals, objectives, or standards. Performance evaluations provide feedback on strengths, weaknesses, and areas for improvement, helping individuals and teams understand their contributions, progress, and developmental needs. Effective performance evaluation involves setting clear performance expectations, collecting relevant performance data, and providing constructive feedback and recognition to motivate performance improvement and professional growth. It involves designing performance metrics, appraisal methods, and evaluation criteria aligned with organizational priorities and values to drive accountability, engagement, and continuous improvement.
When to Apply– When measuring performance or providing feedback to individuals or teams in performance management or talent development processes. – Particularly in understanding the principles and practices of performance evaluation, such as goal setting, performance metrics, and feedback mechanisms, and in exploring techniques to conduct performance evaluations, such as 360-degree feedback, performance appraisals, and performance coaching, to assess performance objectively, facilitate learning and development, and drive performance excellence in talent management or organizational effectiveness initiatives.
Team Building
DescriptionTeam Building is the process of enhancing collaboration, communication, and cohesion among team members to achieve common goals and objectives. Team building activities promote trust, respect, and mutual support among team members, fostering a positive team culture and synergy. They involve engaging in interactive exercises, problem-solving challenges, and experiential learning activities that encourage teamwork, creativity, and resilience. Team building activities can range from icebreakers and trust falls to team retreats and outdoor adventures, tailored to the needs and preferences of the team. Effective team building builds rapport, strengthens relationships, and improves team performance by addressing communication barriers, resolving conflicts, and building camaraderie.
When to Apply– When strengthening team relationships or enhancing team performance in collaborative projects or organizational initiatives. – Particularly in understanding the objectives and benefits of team building, such as improving communication, fostering trust, and boosting morale, and in exploring techniques to facilitate team building, such as team bonding exercises, experiential activities, and facilitated workshops, to cultivate a positive team culture, drive team cohesion, and achieve collective goals in team development or organizational effectiveness initiatives.
Team Conflict Resolution
DescriptionTeam Conflict Resolution is the process of identifying, addressing, and resolving conflicts or disagreements that arise within a team or group. Conflict resolution involves understanding the underlying causes of conflict, facilitating open communication, and finding mutually acceptable solutions that satisfy the interests and needs of all parties involved. Effective conflict resolution builds trust, promotes collaboration, and strengthens relationships among team members, fostering a supportive and productive team environment. It involves employing conflict resolution strategies, such as negotiation, mediation, and problem-solving, to de-escalate tensions, manage emotions, and reach consensus on conflict resolution agreements.
When to Apply– When managing interpersonal conflicts or addressing team disagreements in collaborative projects or organizational initiatives. – Particularly in understanding the sources and dynamics of team conflict, such as communication breakdowns, role ambiguity, and personality differences, and in exploring techniques to resolve team conflicts, such as active listening, perspective-taking, and compromise, to foster constructive dialogue, promote understanding, and restore harmony in team relationships or organizational culture initiatives.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
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