User blog comment:Artemis Paradox/The Official Monster Hunter Wikia Help Blog/@comment-2180517-20110625011100/@comment-3062343-20110625011636

It does the same as it did in previous games (it was called Critical Eye in Tri). Reckless Abandon +1 increases affinity by 10%, Reckless Abandon +2 increases it by 20% and Reckless Abandon +3 increases affinity by 30%.