We frequently think of “emotional” as the opposite of “rational,” but research suggests that feelings might make us think more clearly.
“Being Emotional During Decision Making - Good or Bad? An Empirical Investigation” by Myeong-Gu Seo and Lisa Feldman Barrett - http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2361392/
“Thinking Straight While Seeing Red: The Influence of Anger on Information Processing” by Wesley G. Moons and Diane M. Mackie - http://psp.sagepub.com/content/early/2007/04/17/0146167206298566.short
“Mad enough to see the other side: Anger and the search for disconfirming information” by Maia J. Young, Larissa Z. Tiedens, Heajung Jung and Ming-Hong Tsai - http://www.tandfonline.com/doi/abs/10.1080/02699930903534105#.U_QLc_ldWSp
“Composure at Any Cost? The Cognitive Consequences of Emotion Suppression” by Jane M. Richards and James J. Gross - http://spl.stanford.edu/pdfs/1999%20PSPB%20-%20Composure%20at%20any%20cost.pdf
“The role of emotion in decision-making: Evidence from neurological patients with orbitofrontal damage” by Antoine Bechara - http://www.sciencedirect.com/science/article/pii/S0278262603002859
The quintessential scene from Star Trek IV: the Journey Home - https://www.youtube.com/watch?v=e5CHjiuFehU