This can be a serious problem because in most tests, the items are arranged in increasing order of difficulty, the more difficult items being placed towards the end. An extremely long test with a large number of items takes a long time which may result in the subject getting fatigued and even loss of motivation especially when the person reaches the later stages of the test. There are certain other characteristics, like the total number of items to be answered, the length of the test, and consequently the time taken, etc. When two people independently read the item, they should get the same meaning. The term ambiguity refers to the degree of clarity. Where verbal items are involved, the language should be simple and easily comprehensible by the persons taking the test. The wording of items whether questions or problems or puzzles should be clear and unambiguous. The physical conditions, including temperature, seating arrangements, ventilation, freedom from noise-all should be carefully arranged and set up. Further, if a number of persons are being tested, the conditions under which the testing is done should be constant and uniform for all persons being tested. The purpose and implications of the testing should be made clear. The subject should be tested only under conditions, where he or she is comfortable, relaxed, and free from tension and curiosity as to what would happen if he or she did not perform well. One may be an expert driver but the expression of this expertise is affected by traffic conditions and the driving competence of others driving their vehicles which are on the road. Testing Conditions :Īll of us can do our best in any sphere of activity only if the conditions are congenial. There is ample and consistent evidence that test scores are affected by socio-economic variations. While interpreting the test score, this should provide us a reasonable accurate score when used with children who live in a disadvantaged milieu.
In view of this, a person using a particular test must be clear as to what aspects of intelligence the particular test measures, whether it measures a ‘g’ or a group factor or any specific ability like perception, etc. While intelligence testing as a practice, has become extensive and there has almost been a mushroom growth of intelligence tests, nevertheless there is still no definition of intelligence available on which a large majority of psychologists agree and which is also comprehensive, taking into account the different operations or abilities which are involved in intelligent action. This article throws light upon the nine main requisites of a good test of intelligence.
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