(1)  The principles that are applicable in determining whether a person has been negligent also apply in determining whether the person who suffered harm has been contributorily negligent for the purpose of apportioning liability under section 4 of the Wrongs Act 1954 .

(2)  For the purpose of apportioning liability under section 4 of the Wrongs Act 1954  –

(a) the standard of care required of the person who suffered harm is that required of a reasonable person in the position of that person; and

(b) the matter is to be determined on the basis of what that person knew or ought to have known at the time.