And since the responses involve choices of items rather than expressing strength of preference , there is no opportunity for scale use bias .
Furthermore , humans are much better at judging items at extremes than in discriminating among items of middling importance or preference .
Since the responses involve choices of items rather than expressing strength of preference , there is no opportunity for scale use bias .
Furthermore , humans are much better at judging items at extremes than in discriminating among items of middling importance or preference .