How do mechanistic, organic, and informal organizations differ?

"7.6 Organizational Design Considerations 6. How do mechanistic and organic organizations differ? A mechanistic organization is characterized by a relatively high degree of work specialization, rigid departmentalization, many layers of management (particularly middle management), narrow spans of control, centralized decision-making, and a long chain of command. This combination of elements results in a tall organizational structure. In contrast, an organic organization is characterized by a relatively low degree of work specialization, loose departmentalization, few levels of management, wide spans of control, decentralized decision-making, and a short chain of command. This combination of elements results in a flat organizational structure. 7.7 The Informal Organization 7. How does the informal organization affect the performance of a company? The informal organization is the network of connections and channels of communication based on the"