g0rin9

Hi, i recently started a new character in FO3, but i've been having penalties to some of my S.P.E.C.I.A.L. skills almost the whole time, and i have no idea what's causing them. When i look at EFF, in Stats, there is nothing there causing any penalties. Is there any mod that makes it possible to see what is causing the penalties, or is this a known bug?