unipolar rating scale
a type of instrument that prompts a respondent to evaluate the degree to which a single quality or attribute is present. For example, consider a scale with the following anchors or benchmarks: (1) not at all satisfied, (2) slightly satisfied, (3) moderately satisfied, (4) very satisfied, and (5) completely satisfied. Because there is no anchor that represents the opposing quality of dissatisfaction, the scale has one pole. Also called unipolar scale. Compare bipolar rating scale.