Introduction of intelligence Tests

These tests were introduced on a large scale during the first world war when casualities in trench warfare necessiatd large scale selection and introduction of suitable youth into the Armed Forces.The screening of a introduction of suitable youth in to the Armed Forces.The screening of a large number of volunteers was carried out by devising Intelligence and psycological tests.The tests then found large scale application in the U.S.A for classification of the population in different catagories to access their suitability for different jobs requiring different standrds of intelligence andapptitudes