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7.3 Usability:

It is the characteristic of a test to fulfil following practical consideration.

1. Time for Administration:

The shorter test are favoured but they have how reliability. A safe procedures is to allot as much time as is necessary to obtain valid and reliable results. Some where between 20-60 minutes of testing time is probably a fairly good guile.

  1. Ease of Administration:

A test will be easy to administer when

(I)Directions will be simple and clear.

(ii) Sub-tests will be few.

Time of test will be suitable.

The complicated directions, a number of sub-tests and short time adversly affect the validity and reliability of a test.

  1. Ease of Scoring:

Those tests are favoured that offer ease and economy of scoring without sacrificing scoring accuracy.

  1. Ease of Interpretation:

When the test results are presented to the pupils or parents, ease of interpretation and application are especially important. If results are correctly interpreted, they contribute in important educational decisions.

  1. Availability of Equivalent Forms:

Equivalent forms of a test measure the same aspect of beahvior by using test items that are alike in contents, difficulty level and other characteristics. The equivalent forms of a test are often desireable e.g; if a teacher may feel that score of a student in an achievement test is very low, he may easily check by administering the equivalent form.

6. Cost of Testing:

Test should be economical but sacrificing valid and reliable test of being high cost and selecting cheaper tests is false economy.

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