Equal Weighting for answers - as above some things may matter very little to you as an individual, yet the answer will be used to place you in a category
Scales can't be used to compare with other people - two people might both score as 'D' Dominant, that doesn't mean they would have the same level of dominance.
There isn't a standard test
Originally designed in the early 1900's to assess the "Mental Energy" of army recruits
