In addition to using chunked items, the Carver-Darby Chunked Reading Test differs from the traditional reading test in the way it was developed and the manner in which the test scores are interpreted. The criterion for developing and revising test items was based on the inability of the readers to answer test items correctly before reading the passages and their ability to answer the test items correctly after reading the passages. Interpretation of the test depends on three scores: (1) the efficiency score, i.e., the number of incorrect chunks out of 100 possible that the individual correctly identifies during the 25-minute test period; (2) rate, which is determined by the number of the last item attempted; and (3) accuracy, which is the percent correct. Using these scores the reader can be classified as efficient-inefficient, rapid-slow, and accurate-inaccurate which yield six possible categories of mature readers. Although there is no empirical research which supports this particular categorization, speculative judgments are made concerning them with the hope of stimulating definitive research. References are included. (DH)