The interviewer is glancing to see if you are familiar with the impact assessment concept and its importance. Tip 1: Outline relevant points to conduct an impact assessment. Tip 2: Give your response brief and precise. An impact assessment enables a Change Manager to determine which stakeholders will be affected by the change and the magnitude of the impact. The stakeholders who will be most affected by the change will require more attention and direction than those who will be least affected. The impact assessment directs where resources should be directed during the execution of the change project.