The study has suggested that there is a direct inverse-correlation between the amount of abnormality and the version of IE that is used. For example it was shown that the average IE6 users is more likely to possess a bill and tail where as IE9 users were found to show less obvious signs of deformity.
Links between IE and IQ have been cast into doubt; some IE users have gone as far as to say it was a hoax.
However, disregarding all scientific evidence it is my sound conclusion that IE users are in fact a new sub-species of Human who I now dub "Homo-Sap-IEn-404". If spotted I recommend upgrading to Chrome or Firefox or ethnic cleansing.