 Perrin and Benassi suggest that the items of the CNS should be revised to clearly ask about a person's beliefs, not to be confused with a person's emotions, and that a new scale should be devised to measure one's emotions and the relation to the environment since the CNS does not.Zhang, Howell, and Iyer designed a study to test the hypothesis that connectedness to nature is related to psychological well-being, as proposed by Mayer and Frantz.The researchers used the Engagement with Natural Beauty Scale to test this hypothesis and to measure participants’ tendencies to be stimulated by nature's beauty.