A behavioral domain is well-defined when it is clear to both test developers and test users which categories of performance should or should not be considered for potential test items. Only those tests that are keyed to well-defined domains meet the definition of criterion-referenced tests. The greatest proliferation of criterion-referenced tests in reading has been in the skills monitoring systems or reading management systems. The program-dependent type of test is interlocked with a single published instructional program such as a basal reading series, which is, in effect, part of the program. The second type, program independent, is not integrated with any particular published reading series, but may include charts that cross-reference different basal reading series by page number. A notable weakness, however, is the paucity of information reported on the reliability and validity of the tests used in these systems. There are no published domain-referenced tests of reading behavior. There have, however, been a number of research efforts to develop such tests. These efforts have called attention to the difficulty and amount of time and effort involved in defining domains. What is needed are tests that fall between the so-called criterion-referenced tests and the domain-referenced tests--tests that are feasible in terms of the time and effort required to develop them, but which provide a sound informational base for instructional decisions. (HOD)