Randomized experiments are often seen as the "gold standard" for causal research. Despite the fact that experiments use random assignment to treatment conditions, units are seldom selected into the experiment using probability sampling. Very little research on experimental design has focused on how to make generalizations to well-defined…

This paper addresses four issues in the design and execution of behavioral observation in classrooms. These four issues relate to the consequences of using different observation intervals, schedules of observation, student sampling methods, and definitions of on-task and off-task behavior for reliability, means, and correlations of time on-task…

How various methodological decisions may influence studies of the effect of time-on-task on achievement are examined. Subjects were students in grades 2-5 in 18 classes taught by 12 teachers in a rural Maryland school district. All students were pre-tested in February 1978 in reading, language arts, math and social studies using the Comprehensive…

The Anchor Test Study provides a method for translating a pupil's score on any one of eight widely used standardized reading tests for Grades 4, 5, and 6 to a corresponding score on any of the other seven tests, as well as furnishing new nationally representative norms for each of the eight tests. In addition, the Study presents new estimates of…

The Anchor Test Study provides a method for translating a pupil's score on any one of eight widely used standardized reading tests for Grades 4, 5, and 6 to a corresponding score of any of the other seven tests, as well as furnishing new nationally representative norms for each of the eight tests. In addition, the Study presents new estimates of…

South Carolina's School Incentive Reward Program Program (SIRP) based on year-to-year gains in reading and mathematics achievement, which seemed to have face validity, was evaluated, particularly its use of the relative gains of students in only the highest grade in the school as the basis for the awards. When this requirement was relaxed so that…

Results of the seventh year of testing by the Pupil Assessment Program of the Wisconsin Department of Public Instruction are presented. In 1982, objective-referenced tests in science, mathematics, and geometry were given to a sample of Wisconsin's public school students in grades 4, 8, 11, and 12. Students were also given the Comprehensive Tests…