Re:Why Is the Human Brain So Efficient?
by mlyle on Thursday August 04, 2022 @06:20PM
(#32349060)
> Into adulthood I find it very difficult to say whose intelligence is "better" in anything close to an objective way.
Intelligence is difficult to quantify and define. BUT: peoples abilities on a wide variety of tasks are positively correlated. This strongly implies there is some kind of underlying factor that makes you better at "all things", and this is what IQ tests attempt to measure.
Of course, the correlation coefficients are not 1; so of course someone can have a lower IQ than you but far outperform you in one of these tasks.
The results from IQ tests seem to be very strong predictors of many outcome measures later in life-- indeed, more than parenting seems to predict these things.
edit: from the wikipedia article on g factor:
" Research indicates that tests of g are the best single predictors of job performance, with an average validity coefficient of .55 across several meta-analyses of studies based on supervisor ratings and job samples. The average meta-analytic validity coefficient for performance in job training is .63.[76] The validity of g in the highest complexity jobs (professional, scientific, and upper management jobs) has been found to be greater than in the lowest complexity jobs, but g has predictive validity even for the simplest jobs. Research also shows that specific aptitude tests tailored for each job provide little or no increase in predictive validity over tests of general intelligence."
Intelligence is difficult to quantify and define. BUT: peoples abilities on a wide variety of tasks are positively correlated. This strongly implies there is some kind of underlying factor that makes you better at "all things", and this is what IQ tests attempt to measure.
e.g. see: https://en.wikipedia.org/wiki/G_factor_(psychometrics)#/medi...
Of course, the correlation coefficients are not 1; so of course someone can have a lower IQ than you but far outperform you in one of these tasks.
The results from IQ tests seem to be very strong predictors of many outcome measures later in life-- indeed, more than parenting seems to predict these things.
edit: from the wikipedia article on g factor:
" Research indicates that tests of g are the best single predictors of job performance, with an average validity coefficient of .55 across several meta-analyses of studies based on supervisor ratings and job samples. The average meta-analytic validity coefficient for performance in job training is .63.[76] The validity of g in the highest complexity jobs (professional, scientific, and upper management jobs) has been found to be greater than in the lowest complexity jobs, but g has predictive validity even for the simplest jobs. Research also shows that specific aptitude tests tailored for each job provide little or no increase in predictive validity over tests of general intelligence."