Well even tests are limited by the fact that the questions still run through the subjective interpretation of the individual (and also give you a limited number of choices which allows for less nuance). That sociotype test that includes the images usually gives the result LII-Ti. Here's a link to another test I took: http://imgur.com/4n93ivm. The top result was SLI but ILI wasn't far behind. The results indicate judicious(peripheral), serious(descending), and democratic(egalitarist) which doesn't match up with any of the quadras.