For what it is worth, the biggest class of these is known as the Likert Scale (Strongly Agree, Agree, Neither Agree Nor Disagree, Disagree, Strongly Disagree).

For what it is worth, the biggest class of these is known as the Likert Scale (Strongly Agree, Agree, Neither Agree Nor Disagree, Disagree, Strongly Disagree). There's a slew of research on how to apply and interpret these if you google that term.