Bret Pettichord pointed me out to a column article by Andrew Binstock: Debunking Cyclomatic Complexity shows that cyclomatic code complexity does not correlate to the bug likelihood. Personally I found it quite worth reading since it shows how to be wrong with all the measurement activities you might think of.
James Shore made me remember the condition aspects which I first got to know during my time in school working for my Abitur. On educational science I was introduced to conditioing during my eleventh class if I remember correctly. In his article James shows perfectly how to be wrong on assumptions about rewards which I found quite worth reading with my background as a team leader.