What are the five steps framework in the development of home activities developed by Gordon and his colleagues?

In this framework, each person (A and B) uses what are called "I-messages" to show how they feel about a certain activity (Steps 1 and 3). In steps 2 and 4, the other person uses active listening measures as a way of totally understanding what is being said and felt by the speaker. In step 5, the two persons agree on a mutually-acceptable conclusion as a way of resolving the conflict.