However, this involved the problem of quantifying an abstract concept of intelligence.
This is the reason behind the evolution of the concept of the intelligence testing. The variations in the test records over a definite period is resorted to evaluate the educational benefit or regression, to undertake significant educational decisions ranging from qualifying to the strength of educational services extended. The 'facts' pertaining to their child is brought out by means of various tests and evaluations applied on them. However most are unaware that they should also be aware of the facts. The parents of most of the children require them to be aware of the law and their rights. Intelligence, therefore, is the quantification of the potentiality not a measure of what is learnt. In the words of Whitehead 'intelligence enables the individual to profit by error without being slaughtered by it'. The intelligence tests strive to quantify the level of human intelligence, the basic ability to be aware of the world around, incorporating its functioning and application of the acquired knowledge to increase the quality of the life.
The validity and reliability of online IQ testing measures are also not free from suspicion. The practice of psychometrics is opposed to vehemently on various grounds.
The SAT was shown to be a measurement of the magnitude of IQ to a greater extent. The tests of validity and reliability of the tests associated with measurement of intelligence are to be resorted to in relation to the objectives behind the tests involved. The potentiality of the test to accord consistent results is known as its reliability. The validity of the test indicates the magnitude to which the test succeeds in accomplishing the object. Later Robert Sternberg and Richard Wagner devised a test of practical significance. In the later part of 1930s David Wechsler propounded the concept of Wechsler Intelligence Scale for Children (WISC) and later Wechsler Adult Intelligence Scale.ĭuring the 1960s Vernon and Caroll accepted the theorems of Spearman and Thrustone prescribing intelligence to be narration of abilities at different levels of generalities and devised a theory as hierarchical expression of intelligence. During the first part of 20th century the Binet-Simon scale is devised after the names of Alfred Binet and Theodore Simon. The work of Francis Galton during late 19th Century was considered as the first modern attempt to test the intelligence. The intention of measuring intelligence originated ever since the era of Chinese emperors during 2200 BC when it was attempted to measure the differentiations in the cognitive abilities among humans through the large scale aptitude tests. However, expressing in terms of imaginary units psychologists could visualize to accord ranks and quantify the intelligence. Being an abstract concept it is absurd to think of expressing its magnitude in numbers. It is often essential to measure the human intelligence so as to provide special attention to the deficient ones.