Each question in Simon-Binet or Stanford Revision test is in verbal form. The tests prepared in the beginning were individual verbal i.e., where some sort of language (the mother-tongue of the child) was used. These are, however, useful in making case-studies or individual studies of behaviour problems or backwardness. Individual tests are most reliable but these consume more time and energy. Binet’s test was individual, and so was Terman-Merril Stanford Revision. The ideal of preparing group test was motivated by economy and mass-scale testing work. The first tests that were prepared were individual. These tests generally involve the construction of certain patterns or solving problems in terms of concrete material. These tests are administered to the illiterate persons. Verbal tests are those which require the use of language to answer the test items. Group tests are administered to a group of people Group tests had their birth in America – when the intelligence of the recruits who joined the army in the First World War was to be calculated.Īmong the group tests there are two types:
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