 If the transaction is obviously one-sided such as outright gift (particularly to the person exercising influence), and especially if it will have a serious effect on the victim like leaving them with limited resources, where there is a relationship of trust and confidence between the parties, the courts will presume that the influence was undue.But this will not normally be so where the transaction is to the advantage of the person who was influenced; where a wife simply signed what is put in front of her by her husband his influence was held not to be undue where at the time the transaction appeared to be to her advantage.However, in either case it seems that it makes no difference whether the person exercising the influence obtains any personal benefit or not.