Measuring different aspects of negotiation depends on the purpose, context, and criteria. Commonly, outcomes, process, and skills are measured. Outcomes refer to the results of the negotiation, such as agreements reached, value created, satisfaction of both parties, and relationship quality. Process is about actions and behaviors during the negotiation, such as strategies, tactics, communication styles, and emotions. Skills refer to abilities and competencies used or developed in negotiation, such as listening, questioning, framing, problem-solving, influencing, and adapting. Outcomes can be measured quantitatively or qualitatively. Process can be measured by observing or recording the negotiation interactions or by asking for feedback from the other party or a third party. Skills can be measured by self-assessment, peer assessment or expert assessment using tools like checklists, surveys or tests.