Modes of persuasion

Not counting threats and torture, Aristotle first proposed that three “modes” can be used to persuade your audience: your status as an author (ethos), rational arguments (logos) and emotional arguments (pathos).  Generally speaking, classical oration would begin with ethos, develop with logos and end with pathos to give an emotional punch.

Scientific articles primarily use rational argument with experimental findings and statistics being used as support; however, there’s no harm in using some pathos in your conclusion.  A judicious use of metaphor or an earnest declaration of how your findings will benefit the subject area in general will elevate your paper above similar works.