@golden, are you talking about how any psychometric test, like let's say a 1-5 scale likert test (strongly agree, agree, neither, disagree, strongly disagree) people have a tendency to rate themselves in the middle regardless of the questions? I remember My statistics teacher mentioned that and said you should never give people an odd numbered option for that reason. That all has to do with experiment design. I don't know what best item scheme would work for socionics - that's something we'd have to figure out. That's one reason I think we need to evaluate socionics statistically, so we can measure small incremental improvements.