One of a series of reading research profiles developed from the ERIC/CRIER data base, this annotated bibliography which focuses on the assessment of reading behavior is aimed primarily at researchers but is also relevant for test developers and users. The included studies cover the years 1950 to 1969 and were selected from published journal literature, dissertations, USOE-sponsored research, and International Reading Association conference proceedings. Part 1 examines organismic, test composition, and environmental factors which affect validity and reliability of tests and includes empirical studies of such factors. Part 2 cites studies which examine validity and reliability problems related to vocabulary, comprehension, word attack, rate, study skills, oral reading, and other subareas of reading. Informal reading achievement measures, including informal reading inventories, check lists, rating scales, and teacher evaluations are discussed in Part 3. Multiple criteria use and other problems of measuring reading growth are considered in Part 4, school-wide testing programs are cited in Part 5, and unique approaches to measuring reading achievement are described in Part 6. An author index and ordering instructions for document reproductions are included. (MS)