This article explores a number of key issues with regard to the measurement of creativity in the course of conducting psychological research or when applying various evaluation measures. It is argued that, although creativity is a fuzzy concept, it is no more difficult to investigate than other fuzzy concepts people tend to take for granted. At the same time, it must be acknowledged that conducting any research investigation or any evaluation has its pitfalls and needs careful attention at all stages. However, fuzzy concepts do pose some problems for evaluation. Examples of these kinds of problems as they relate to creativity are discussed, along with examples of neglected areas of creativity research which need to be tackled and widespread assumptions worth questioning.