(-) BUT others questioned whether intelligence is more than 'g', such as Gardner and Sternberg, if one takes this view then tests like WAIS and SB could be argued to be measuring only one element of intelligence; some argue intelligence has been reified
Criterion/Predictive Validity (measuring the accuracy of IQ tests by comparing test scores with another current/future criterion like exam grades - if IQ is measuring something real, two measure should correlate)
(+) WAIS demonstrates a correlation of +0.5 with later school grades
(-) however, although test has some predictive validity, it cannot explain ALL exam grades (otherwise it would be +1), therefore suggests other factors must be involved
(-) Helen Bee (1994) argues it is impossible to measure potential or underlying ability, and IQ tests ignore factors such as motivation and effort
(?) however professionals (doctors/lawyers) have average IQ of 120 whereas semi-skilled occupations have 100, suggesting may predict type of job a person is likely to do later in life, but not necessarily how good they'll be at it
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