There is no question whether emotion plays a part of decision making. It plays a part of all behavior.

Love is a decision - not an emotion!

He just wanted me to be careful and not make a decision off of a reaction and emotion or resentment or anything, ... but to make a logical, good decision.

Human behavior flows from three main sources: desire, emotion, and knowledge

Much of the previous evidence of systematically conservative behavior involves highly stylized laboratory settings with small stakes and inexperienced decision-makers devoting relatively little effort to their choices. Thus previous work provides little evidence about the strength of force pushing decision-makers toward conservatism. The results of this paper suggest that the forces may be shockingly strong.

First and foremost, this decision shows this type of behavior will not be tolerated.