10. The test agrees with itself. It is concerned with
the consistency of responses from moment to
moment. Even if a person takes the same test
twice, the test yields the same results. However, a
reliable test may not always be valid.
Reliability
11. Test-retest method
The same research instrument is
administered twice to the same group of
subjects and the correlation coefficient
determined
12. Spearman rank correlation of coefficient
or Spearman rho
is a static used to measure the
relationship between paired ranks
assigned to individual scores on two
variables
13. Parallel or equivalent forms of test
The two forms of the test must be constructed
so that the content, type of item, difficulty,
instructions for administration, and many
others, are similar but not identical.
14. Split - Half method
The test in this method may be administered
once, but the test items are divided into two
halves. The common procedure is to divide a
test into odd and even items.
16. Usability
means the degree to which the research
instrument can be satisfactorily used by
teachers, researchers, supervisors and school
managers without undue expenditure of time,
money, and effort, I other words, usability
means practicability.
17. Factors that determine usability
Ease of administration
Ease of scoring
Ease of interpretation and application
Low cost
And proper mechanical make up.
