The main purpose of this study was to develop, validate, and standardize a Group Verbal intelligence Test in Urdu for adolescents to measure the general intelligence of adolescents within the age range of 17 to 20 years and with the educational qualification of Grade 12. To ascertain the validity of the instrument for our population, the test was devised in Urdu language, which is the national language of our country.
Before the preparation of the draft test, the items were developed after a detailed study of the various well known and extensively used standardized verbal intelligence test. Initially a pool of 250 items was developed. The researcher decided to develop such-tests: vocabulary test, Verbal Reasoning test. Numerical reasoning test, and Information test. The basic reason for developing four sub-test was to make the test as varied as possible so as to get on opportunity to measure various aspects of intellectual functioning initial item pool was tried out on a sample of 60 students of grades 11 and 12 in the age range of 17 to 20 years.
After pre-testing, 230 items were retained. The four sub-test were then administered on a sample of 200 candidates of PMA Long Course who had completed grade 12. Age range of the subjects was 17 to 20 years. The purpose of the administration was to analyze the items with reference to internal consistency. Difficulty level and discrimination index. Keeping in view the three indices, 153 items were retained. These items were rearranged according to their descending level of difficulties and were again administered to another sample of 200 candidates of PMA Long Course for second item analysis After the second item analysis, the items were reduced to 128 which were rearranged according to their descending order of difficulty level.
Before administering the sub â€“test for psychometric characteristic in main study, it was decided to give the title of sajjad verbal intelligence test in urdu (svitu) to the newly developed test .average time for svitu and sub â€“test was calculated. Svitu was administered to a sample of 535 candidates of PMA long course who had completed grades 12 and were in the age range of 17 to 20 years. The sample was taken from the army selection and recruitment center of pakistan. The purpose of the main study was to find out different psychometric characteristics of the test.
The reliability of the svitu was determined by kuder rechardson method,. split-half method and test â€“retest method. The results suggest high reliability of the test both in terms of internal consistency and temporal stability of the results.
The validity of the test was determined by four procedures .the construct validity of the test was studied by correlating it with army intelligence test. The concurrent validity was determined by correlating it with the college marks of the student in their past annual examination. Other two techniques were internal consistency of the sub-test and grade differentiation. All the four indices established the evidence of high validity of the test.
Percintile norms, z-scores and t-scores were computed for grade 12 boys only.