 Romanes documented an account that exemplifies this methodology, the example; a hunter who had shot and wounded a monkey, this monkey then held his blood-stained hand out to the hunter "to make him feel guilty".As Romanes did not further investigate the anecdotes with test experiments to consider an alternative hypothesis, this method became contentious among his fellow scientists.According to Professor Frans de Waal from Emory University, Romanes reliance on these singular events and Darwin’s internal subjective thinking to explain his own research experiences is what led subsequent scientists to favour the behaviourist approach.