Testing a Sample of Iqs Compared to the Population Mean Essay

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colloquially individuals may think that some people are smarter than others, the more scientific term for the concept of being smart is intelligence. The notion of measuring a person's intelligence was first pursued in the early 1900s by Alfred Binet (Kamin, 1995). The French government was looking for a way in which to help predict which students would have the most difficulty in school (Kamin, 1995), so they hired Alfred Binet, who was a psychologist, to develop a test. Binet developed the first intelligence test, a version of which is still used today (Kamin, 1995). Intelligence testing really took off during World War I, when the U.S. army wanted a way to screen a high number of army recruits. This lead to the development of new forms of intelligence tests in order to determine which army recruits were of a higher intelligence and would be successfully in leadership roles (McGuire, 1994).

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The modern intelligence quotient, or IQ, is based on standardized tests where the mean score of the sample is defined as 100 (Neisser, 1997). With one standard deviation being +/- 15, approximately 95% of all humans have an IQ score somewhere within the range of 70 and 130. IQ scores have been found to be very closely related to a number of achievement measures, such as educational achievement and job performance, as well as difficulties, such as whether or not an individual might be considered special needs.

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Ten participants completed a standard measure of intelligence in order to provide their IQ scores. In order to determine whether the IQ scores for….....

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