Data collection tools and methods
We've talked so far about what to measure, that's traits, behaviors, and outcomes. We've also considered different sources for each of these from self reports to 360s. Now it's time to talk about the specific tools and methods used to collect data. What are the measures we use? I'll start by being honest. There is no perfect measure. Several are popular and useful. I'd like to familiarize you with the most common approaches. Earlier we mentioned that performance diary, which is full of critical incident observations.
We also noted objective measure, such as goal attainment. But the most common type of measure, by far, is some form of graphic rating scale. You'll also see some use of rankings and checklists. But rating scales dominate most appraisal systems. A graphic rating scale gives the evaluator a list of dimensions, each one representing some aspect of the employee's effectiveness. Each dimension has its own multi-point rating scale, most often a five-point, or a seven-point scale.Source: https://www.linkedin.com/learning/performance-review-foundations/data-collection-tools-and-methods