A scientific report suggests that regular engagement in team sports is linked to improved social skills among adolescents. The report claims that students who participate in team sports are 40% more likely to exhibit high levels of cooperation and communication compared to their peers who do not engage in any sports activities. However, critics argue that this correlation does not imply causation and that the benefits of team sports might also be attributed to other factors, such as family environment or personal interest.
To strengthen the argument that team sports lead to improved social skills, which of the following pieces of evidence would be most useful?