The "Standards for Educational and Psychological Testing" of the American Educational Research Association, the American Psychological Association, and the National Council on Measurement in Education are intended to provide a comprehensive basis for evaluating tests. This digest identifies key standards applicable to most test…

In educational research and evaluation, a sample of subjects usually received some type of programmatic treatment. Outcome scores for these students are then compared with outcome scores of a control or comparison group. M. Lewis and H. McGurk (1972) have pointed out that there are some implicit assumptions when this approach is applied to…

Several common sources of error in assessment that depends on the use of judges are identified, and ways to reduce the impact of rating errors are examined. Numerous threats to the validity of scores based on ratings exist. These threats include: (1) the halo effect; (2) stereotyping; (3) perception differences; (4) leniency/stringency error; and…