The document discusses and provides examples of several defense mechanisms: projection, transference, and repression. For projection, it provides an example of a mother projecting her own fears onto her daughter. For transference, it discusses how past feelings toward parents can be transferred to teachers or other authority figures. For repression, it focuses on dissociation as a form of repression where traumatic memories or feelings are involuntarily blocked from consciousness. It concludes that while defense mechanisms can be adaptive for preserving mental health, their effects are not always consciously understood.