Autistic, systemizing and empathizing quotients

In my last experiment I have been investigating along with mental abilities and EEG also testosterone levels and psychological quotients. These quotients have been shown to be correlated with mental abilities and also testosteron levels. Our aim is also to focus whether we can see some differences in the EEG signal.

But what are these quotients? All of them have been proposed to better describe people with autism (mainly Asperger syndrom) and were designed by Simon Baron-Cohen ( http://en.wikipedia.org/wiki/Simon_Baron-Cohen).

It is a set of 4 questionnaires which sometimes overlap a little. In empathizing and systemizing questionnaire there are also some blind questiones which aren't consider for the quotient summation. The first 3 (autism, empathy and systemizing) have 4 answers - strongly agree, slightly agree, slightly disagree and strongly disagree where you have to choose only one answer. The fourth questionnaire is focused on empathy detection based on the ability of detecting state of the people mind from people eyes.

Autism quotient - 50 questions
Systemizing quotient - 60 questions
Empathy quotient - 60 questions
Empathy from eyes - 36 questions (normal 22-28 correct)

You can test quizes on the webpage: http://glennrowe.net/BaronCohen.aspx

The papers where the work was published and the comparison between control group and autistic children was  done can be found in:

Baron-Cohen, S, & Wheelwright, S, (2004) The Empathy Quotient (EQ). An investigation of adults with Asperger Syndrome or High Functioning Autism, and normal sex differences. Journal of Autism and Developmental Disorders, 34, 163-175. (reference)

Baron-Cohen, S, & Wheelwright, S, Skinner, R, Martin, J, & Clubley, E, (2001) The Autism-Spectrum Quotient: Evidence from Asperger Syndrome/high-functioning autism, males and females, scientists, and mathematicians. Journal of Autism and Developmental Disorders, 31, 5-17. (reference)

Baron-Cohen, S. (2003)  The systemizing quotient: an investigation of adults with Asperger syndrome or high-functioning autism, and normal sex differences;Philosophical Transactions: Biological Sciences, The Royal Society, 2003, 358, 361-374
(reference)