part3 The other is that a much larger portion of the population now goes to college. If the distribution of intelligence is not hugely discrepant from normal, with most people being about average, and if there was any validity to the selection of the most intelligent to go to college, then of course the average goes down.
IQ group-administered tests are roughly a measure of achievement relative to others the same age. If a student gets the same number of items correct as the mean/median student the same age in the previously tested students used as a norming group then a score of 100 is assigned. Otherwise there are some slightly varying ways of getting scores. . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
