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A rating scale is a set of categories designed to obtain information about a quantitative or a qualitative attribute. In the social sciences , particularly psychology , common examples are the Likert response scale and 0-10 rating scales, where a person selects the number that reflecting the perceived quality of a product .
For example, in the above five-point Likert item, the inference is that the 'distance' between category 1 and 2 is the same as between category 3 and 4. In terms of good research practice, an equidistant presentation by the researcher is important; otherwise a bias in the analysis may result.
A scoring rubric typically includes dimensions or "criteria" on which performance is rated, definitions and examples illustrating measured attributes, and a rating scale for each dimension. Joan Herman, Aschbacher, and Winters identify these elements in scoring rubrics: [3] Traits or dimensions serving as the basis for judging the student response
The following diagnostic systems and rating scales are used in psychiatry and clinical psychology. This list is by no means exhaustive or complete. This list is by no means exhaustive or complete. For instance, in the category of depression, there are over two dozen depression rating scales that have been developed in the past eighty years.
Stapel scale – This is a unipolar ten-point rating scale. It ranges from +5 to −5 and has no neutral zero point. It ranges from +5 to −5 and has no neutral zero point. Thurstone scale – This is a scaling technique that incorporates the intensity structure among indicators.
Behaviorally anchored rating scales (BARS) are scales used to rate performance.BARS are normally presented vertically with scale points ranging from five to nine. It is an appraisal method that aims to combine the benefits of narratives, critical incidents, and quantified ratings by anchoring a quantified scale with specific narrative examples of good, moderate, and poor performance.
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Raters are first calibrated as a group so that two or more of them can independently assign the final score to writing sample within a pre-determined degree of reliability. The final score lies along a pre-set scale of values, and scorers try to apply the scale consistently.