In this blog post, we explore individual assessment and the role of group leaders in preventing free-riding in college group projects and propose effective solutions.
During college, students inevitably participate in group projects. Through repeated experiences with these projects, college students come to understand firsthand why communism has failed in the real world. When a group gathers to work on an assignment and all members receive the same grade based on the group’s final output, individuals may think, “Even if I don’t put in much effort, someone else will cover for me.” This leads to the “free-rider” phenomenon, where those who do not participate diligently still receive good grades while others work hard to produce quality results. Such situations ultimately undermine the purpose of group work, and the selfish behavior of individuals ends up harming the entire team.
In fact, group work in college is not aimed solely at academic achievement. Through this process, students cultivate teamwork, a sense of responsibility, and communication skills—all essential for life in society. These experiences will prove invaluable when students later face similar challenges in the workplace or within their communities. Therefore, the success of group work holds significance far beyond mere grades.
In this article, I will propose strategies to prevent free-riding and facilitate optimal group work by drawing on a hypothesis from ‘The Emergence of the Altruistic Human’, and further argue for the reasons why we should live virtuously.
First, to prevent free-riding, groups should not be assigned the same grade; instead, individual evaluations must be included. Without individual evaluations, students may be tempted to free-ride because their grades are determined by the group’s output regardless of their personal contribution. Therefore, incorporating individual evaluations can prevent free-riding in the first place, and individuals will actively participate in group activities to perform well on their individual assessments. The “costly signaling hypothesis,” introduced in ‘The Emergence of the Altruistic Human’, explains that individuals seek to receive rewards by signaling their abilities through altruistic behavior within a group. Accordingly, group members will participate in activities to increase their level of contribution and thereby receive higher individual evaluations.
The challenge that now needs to be addressed is, “How should individual evaluations be conducted?” Unless the contributions are quantifiable—such as the number of bricks carried—the extent and importance of each member’s contribution to group activities vary, and it is difficult to express these accurately on a single scale. It would be ideal if the professor assigning the final grades could observe and judge all activities personally, but realistically, it is impossible for the professor to participate in and monitor every activity conducted by each group. Therefore, the professor needs a representative to observe the group members on their behalf, and this can be achieved through the group leader.
Now, let’s consider what role to assign to the group leader. First, even if the group leader is simply tasked with observing and evaluating the other members, there is still a possibility that the group leader might free-ride. Consequently, the professor grades the group leader based on the group’s overall output. This approach ensures that the group leader will guide the group toward the best possible results and, naturally, participate actively, thereby eliminating any incentive for the group leader to be a free rider.
The role of the group leader in group activities is extremely important. The group leader is not merely the group’s representative but bears the responsibility for evaluating the group’s performance and each member’s contribution. To maximize the group’s performance, the group leader must demonstrate leadership by guiding members and identifying each member’s strengths to assign appropriate tasks. Furthermore, under the group leader’s guidance, members fulfill their respective roles and responsibilities, enabling the group to achieve the best possible results through teamwork. In this structure, the likelihood of free-riding naturally decreases, and the objectives of group activities can be achieved.
Now, group members may be motivated to free-ride, assuming that the group leader will do all the work. This can be addressed by having the professor assign a total score to the group’s output, which the group leader then distributes among members based on their individual contributions. Consequently, each member will participate more actively and work together to ensure the group receives a high total score. Furthermore, in line with the “costly signaling” hypothesis mentioned earlier, this approach can encourage altruistic and active participation as members strive to receive a larger share of the total points.
However, since the group leader might be biased or lack objectivity when distributing points, group members evaluate each other’s contributions, and the professor determines the final grades based on both the leader’s allocation and the peer evaluations. Just like in the Prisoner’s Dilemma—where the sentences of two suspects under interrogation are determined by whether they remain silent or confess—in a one-time decision-making situation, individuals can benefit by making selfish choices. However, the Repeated Reciprocity Hypothesis posits that in situations where choices are made repeatedly and individuals face each other repeatedly, they will make altruistic choices toward one another. If peer evaluations take place after group activities have ended—when there is no further interaction between members—individuals will tend to behave altruistically, and each group member will actively participate in group activities rather than free-ride.
Finally, since there may be cases where a student receives a low evaluation due to interpersonal dynamics within the group despite having contributed significantly to the group activities, a remedy must be established to allow students to raise objections to the group leader’s scores and evaluations with the professor. This serves as an important mechanism to ensure that individual contributions are evaluated objectively and to prevent unfair situations from arising.
To prevent free-riding at its source, individual scores are assigned rather than group scores, and to ensure objective evaluation, aspects that the professor cannot realistically observe are assessed through the group leader. The group leader assigns scores based on the group’s performance, thereby eliminating the possibility of the leader engaging in free-riding and encouraging active participation and leadership. To prevent situations where the group leader works hard alone while other members free-ride, the group leader should be allowed to allocate the group’s total score among members based on their individual contributions. This removes the incentive for members to free-ride and encourages them to participate actively in order to maximize the group’s total score. To ensure scoring is objective and aligns with the professor’s intentions, group members evaluate one another, and the professor determines the final score by comparing these evaluations with the scores assigned by the group leader. Finally, to prevent contributions from being undervalued due to interpersonal relationships among group members, students are allowed to file an appeal with the professor. Using this method eliminates the incentive for all group members, including the group leader, to free-ride. The group leader receives a high score only if the group performs well, and group members also receive higher individual scores when the group’s total score is high. Therefore, since active participation is necessary to earn a good individual evaluation, an environment is created in which all group members—including the group leader—actively participate in group activities.
Group activities can also be viewed as a microcosm of society. However, because the duration is short, if one person engages in selfish behavior—such as free-riding—while others act altruistically, that individual stands to gain economically, and as a result, not everyone will actively participate in group activities. Therefore, by utilizing the repetitive and reciprocal interactions described above, the constraints of a finite duration are mitigated, creating an environment where everyone can participate altruistically in group activities.
The society in which we actually live is far more complex and diverse. While there are situations involving consistent interaction, such as in the workplace or within organizations, the duration of relationships varies widely—from those that last a lifetime to fleeting encounters, like passing strangers on the street whom we never see again. In cases like the former, where interactions are long-lasting, people naturally behave altruistically toward one another. This is because, in such situations, if one acts improperly and harms another, they may face retaliation from that person in the future.
