Originally Posted by CCCC
Just found the 10th.

And, read that Raven's Progressive Matrices IQ test was discredited some time ago - was scoring folks 20 points too high.

Makes sense since I score 130 on WAIS-R but max out the Raven's PM. Either you are correct, or the WAIS-R under scores IQ by 20 points, LOL. The latter actually seems a possibility, since the WAIS-R is excessively weighted on verbal and knowledge, which should really be considered sources of contamination rather than pure intelligence factors.