Chapter Assignment (2%)- must be submitted on Blackboard, under Assignments, by the end of next class. True or False : Explain your answer Informal communication is a coordination mechanism only in small and a few medium-sized organizations. One of the main benefits of formal hierarchy as a coordinating mechanism is that it increases flexibility and responsiveness to customer needs. Span of control can be increased by introducing informal communication and other coordinating mechanisms. A mechanistic structure is decentralized, has a narrow span of control and little formalization. Functional structures foster professional identity and permit greater specialization than most other forms of departmentalization. Organizations tend to centralize as their external environment becomes more complex