Final answer:
To effectively communicate and maintain positive relationships with developers when there is a disagreement over the prioritization of a defect, remind them of the common goal of creating quality systems. It is also important to stay calm, listen to the other side of the story, and avoid suggesting that you're right and the other person is wrong.
Step-by-step explanation:
When there is a disagreement over the prioritization of a defect, effective communication and maintaining positive relationships with developers are key for testers. One important approach is to remind them of the common goal of creating quality systems. By emphasizing that everyone is working towards the same objective, it helps to foster collaboration and reduces conflict. Additionally, it is important to stay calm, listen to the other side of the story, and avoid suggesting that you're right and the other person is wrong. This approach promotes open and respectful communication.