People usually communicate with one another in fairly predictable patterns that are known as networks. Cleary (2003) identified the two primary types of networks, namely Centralised networks and Decentralised networks
As the word centralised means intra group communication depends on the person in the centre. These networks are suitable for simple or repetitive tasks. Communication overload can occur because everything is channelled through one person. He may also block or control the information going out to the rest of the group. This person usually works very hard, wields a lot of power and is very satisfied. The rest of the group may not be satisfied at all.
These networks are suitable for small groups, communication is unstructured and takes place freely. They are commonly used for people on the same hierarchical level, for discussion groups and brainstorming.