I just like to share more of my thoughts on WMI. I wouldn't call it a short-term memory (meaning learning and acquisition of new information) measure. I believe of the WISC subtests, "Coding" fulfills this function the most and thus is often the lowest subtest for many (you just can't compensate with your good reasoning on this one). WMI is more correlated with attention, inhibition of distraction and executive function/mental flexibility and thus is usually higher than PSI. However, it is usually lower than the reasoning indexes because in addition to good attention, you can't have an LD in order to get a high as opposed to decent WMI. For instance, I have an atrocious short-term memory/learning. On the California Verbal Learning Test which involves memorizing word lists over repeated trials, I did abysmally. However, my WMI was very solidly average. PSI, on the other hand, was below average. I'd like to add: a 12 and 13 on WMI yields slightly higher index score than the pure averaging would suggest (that's from seeing WISC IV profiles on this board). I believe it should be 114 which is around 82%ile.
Last edited by asiral; 03/03/10 06:26 PM.
