Talk:Thug/@comment-91.113.121.44-20120409053106/@comment-4115045-20120409151200

The green up arrow is indeed a positive effect, while the red down arrow is a negative effect. However, since the effects are very hard to figure out and sometimes may not be big enough to be noticed, you might as well not experience any effect at all (both positive and negative).

Many rewards are without any benefit whatsoever. It is possible this goes for some other bonuses too. Since that is truly hard to find out beside from the game developer, we (wiki editors, which might include you) don't know for sure.