Testator’s reasons for dispositions

(1) The court shall also, on any such application, have regard to the testator’s reasons, so far as ascertainable, for making the dispositions made by his will, or for not making any provision or any further provision, as the case may be, for a dependent. (2) The court may accept such evidence of those reasons as it considers sufficient, including any statement in writing signed by the testator and dated, so, however, that in estimating the weight, if any, to be attached to any such statement the court shall have regard to all the circumstances from which any inference can reasonably be drawn as to the accuracy or otherwise of the statement.