Creating Valid Skills/Performance Evaluations

In our previous two posts we reviewed the problems that occur when using rating scales for evaluations. First, we discussed (The Problem with Rating Scales) the difficulties that arise when rating data, which is ordinal, is treated as if it was ratio data prior to its use in mathematical operations, such as averaging. Then, we …

Reporting Level One Evaluations

In our last blog post we pointed out the many problems with rating scales. We hope we convinced you that doing traditional math on these scales is a mathematically invalid exercise. So, the question becomes: How do we report results from Level One and Skills Evaluations? The answer is somewhat different for each. We will …