The MIDAS OMS does not compute normalized standard scores. It uses percentage scores, which reflect how many points one has on a certain scale or skill relative to the maximum for that scale or skill. The formula is:
round(x/max * 100)
Intelligence score is higher or lower than average of specific skill scores
Sometimes you can see in a profile that a percentage score for an intelligence is lower or higher than expected based on the subskill scores ; for instance in a VIEW profile Musical intelligence may be at 43, while the subscales Musical Instrument and Vocal are 47 and 100 respectively. One might think that Musical intelligence would have a score of 74. However, the Musical intelligence is based on questions 1, 2, 3, 4, 5, 6, 7, 12, 29 and 31, and Instrument on 2, 3, 4, 5 and 12, Vocal on 1 and 6, so it may be that items 7, 29 and 31 pull the total result down.