This article discusses the interchangeability of three self-report measures for reading anxiety. Despite their differences in target constructs, the three scales have been used for similar lines of research. After computing shared variance between the target scales and examining the behavior of anxiety indexes in relation to the amount of graded reading and reading comprehension performance, the author reaches the conclusion that each of the three scales should be treated as a unique research tool (i.e., the scales are non-interchangeable with one another). The overall results also suggest the utility of each reading anxiety scale in educational research and practice.