The suggestion that multiple-choice items can be converted to true-false items without essentially changing what the item measures and with possible improvement in efficiency is investigated. Each of the 90 four-choice items in a natural science test was rewritten into a pair of true-false items, one true, one false. The resulting 180 items were…

A study designed to compare the reliabilities of multiple choice and true-false tests that were constructed to measure the same objectives was conducted. The impetus for this study came from the research reported by Ebel (1971) on the same topic. Subjects were selected from six public high schools. Three phases of testing were required for…