Models of communication are simplified representations of the process of communication that help us understand how communication can be carried out. They provide a compact overview of the complex process of communication, which helps researchers formulate hypotheses, apply communication-related concepts to real-world cases, and test predictions. Despite their usefulness, many models are criticized based on the claim that they are too simple because they leave out essential aspects.

There are several models of communication, and some of the most common ones are:

1. Linear Transmission Model: This model describes communication as a linear, one-way process in which a sender intentionally transmits a message to a receiver. The receiver is viewed as more of a target or endpoint rather than part of an ongoing process.

2. Interaction Model: This model includes a feedback loop through which the receiver responds after receiving the message. It also includes the idea that noise may interfere and distort the message.

3. Transaction Model: This model views communication as a cooperative process whereby two people are responsible for influencing the outcome of the conversation. It highlights that we don’t just share information through communication, but also form bonds, unlock value, and create relationships.

4. Berlos SMCR Model: This model includes four components: source, message, channel, and receiver. It emphasizes the importance of encoding and decoding messages and the role of feedback in the communication process.

5. Shannon-Weaver Model: This model includes five components: source, encoder, channel, decoder, and receiver. It emphasizes the role of noise in the communication process.

6. Schramms Model: This model includes three components: source, message, and destination. It emphasizes the role of the receiver in the communication process.

7. Osgood-Schramm Model: This model includes three components: communicator, message, and audience. It emphasizes the importance of shared meaning and the role of feedback in the communication process.

8. Transactional Process Model: This model emphasizes the importance of context and the fact that communication is an ongoing process that involves both parties.

In conclusion, models of communication are simplified representations of the process of communication that help us understand how communication can be carried out. There are several models of communication, and each one emphasizes different aspects of the communication process.