|
IQ is the most replicated finding in psychology, and almost certainly the most used. It is very far from being of no value. http://www1.udel.edu/educ/gottfredson/reprints/1997whygmatte... Why g Matters: The Complexity of Everyday Life LINDA S. GOTTFREDSON University of Delaware
Personnel selection research provides much evidence that intelligence (g) is an important predictor of performance in training and on the job, especially in higher level work. This article provides evidence that g has pervasive utility in work settings because it is essen- tially the ability to deal with cognitive complexity, in particular, with complex information processing. The more complex a work task, the greater the advantages that higher g confers in performing it well. Everyday tasks, like job duties, also differ in their level of complexity. The importance of intelligence therefore differs systematically across differ- ent arenas of social life as well as economic endeavor. Data from the National Adult Literacy Survey are used to show how higher levels of cognitive ability systematically improve individuals’ odds of dealing successfully with the ordinary demands of modem life (such as banking, using maps and transportation schedules, reading and understanding forms, interpreting news articles). These and other data are summarized to illustrate how the advantages of higher g, even when they are small, cumulate to affect the overall life chances of individuals at different ranges of the IQ bell curve. The article concludes by suggesting ways to reduce the risks for low-IQ individuals of being left behind by an increasingly complex postindustrial economy. https://journals.sagepub.com/doi/abs/10.1111/j.0963-7214.200... Intelligence Predicts Health and Longevity, but Why? Large epidemiological studies of almost an entire population in Scotland have found that intelligence (as measured by an IQ-type test) in childhood predicts substantial differences in adult morbidity and mortality, including deaths from cancers and cardiovascular diseases. These relations remain significant after controlling for socioeconomic variables. One possible, partial explanation of these results is that intelligence enhances individuals' care of their own health because it represents learning, reasoning, and problem-solving skills useful in preventing chronic disease and accidental injury and in adhering to complex treatment regimens. |
In any case, he comes off as childish and bitter. It’s all filtered through the idea that success means being a multimillionaire, and everyone else is a failure. His perspective seems limited to finance and academics in that sphere.