Team composition refers to the overall mix of characteristics among people in a team, which is a unit of two or more individuals who interact interdependently to achieve a common objective. It is based on the attributes among individuals that comprise the team, in addition to their main objective. Team composition is usually either homogeneous, in which all members are the same, or heterogeneous, in which team members all contain significant differences. It has also been identified as a key factor that influences team performance. It factors in the individual attributes of team members (e.g. skill, experience, and ability) and how these contributions can potentially combine to dictate overall performance outcomes for the team. In the past decade, research on team effectiveness has burgeoned as teams have become increasingly common in organizations of all kinds. Research conducted on this topic has focused on aggregated member characteristics, member heterogeneity and team size as categories associated with team composition. The fashion in which a team is configured has a strong influence on team processes and the outcomes that the team achieves. The main outcomes associated with team performance can be classified mostly as performance outcomes (overall quality/precision of work produced, etc.) internal member outcomes (group cohesion, etc.) and behavioral outcomes (absenteeism, etc.). Attributes Team size The preferred team size has a significant impact on team sport. Team size is determined by the original purpose for the team, the individual expectations for the members of the team, the roles that the team members need to play, the amount of cohesiveness and inter-connectivity optimal for team performance and the functions, activities and overall goals of the team. While the size of a team is dependent upon many variables, the concept of "ideal" team size also varies. A variety of recommendations are easily found in multiple research studies, but these type of recommendations are difficult to evaluate, because they are often based on anecdotal evidence rather than empirical evidence. However, it is difficult to determine what constitutes appropriate team size from empirical research. Some research suggests that size has a curvilinear relationship with effectiveness such that too few or too many members reduces performance, whereas other studies have found team size to be unrelated to performance or increasing team size actually improves performance without limit. These differing recommendations and results are likely due to the fact that appropriate team size is dependent on the task