How is contract effected by undue influence?

Undue influence exists where one improperly takes advantage of one's relationship with another to coerce the other person to enter a contract

The effect of coercion is that It makes the contract voidable at the option of the party's whose consent is obtained by coercion The effect of undue influence is that it makes the contract voidable...

Undue Influence is the book by Steve Martini

Undue influence is any act of persuasion that overcomes the judgment and free will of another person. It can include such things as deception, flattery, begging, trickery, insinuations and other...

Duress and undue influence are pressure put on someone to do what is being requested of them against their best wishes