ringelmann effect

is the tendency for individual members of a group to become increasingly less productive as the size of their group increases.

The Ringelmann effect is the tendency for individual members of a group to become increasingly less productive as the size of their group increases. This effect, discovered by French agricultural engineer Maximilien Ringelmann (1861-1931), illustrates the inverse relationship that exist between the size of a group and the magnitude of group members' individual contribution to the completion of a task. (wikipedia)

ringelmann effect, n.All

ringelmann effect