The document discusses improving communication climates through establishing confirming communication. It describes different types of disconfirming and confirming messages that can shape relationships. It also discusses how communication climates develop and how spirals of escalating or de-escalating conflict can form. The document then covers causes of defensiveness and strategies to prevent defensiveness in others, such as using descriptive rather than evaluative language. Finally, it outlines how to structure assertive messages and respond nondefensively to criticism through agreeing with valid criticisms and seeking further understanding.