What is the test for prejudicial evidence in a personal injury trial?

nature as to inflame the emotions of the jury, motivating them to use the information, not to logically evaluate the point upon which it is relevant, but to reward or punish one side because of the jurors' emotional reaction. In such a circumstance, the evidence is unduly prejudicial because of the substantial likelihood the jury will use it for an illegitimate purpose." [Citation.]'" (People v. Scott (2011) 52 Cal.4th 452, 490-491; accord, People v. Tran (2011) 51 Cal.4th 1040, 1048.)