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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.
Until 1996 relative grades on the scale 1–5 were used, with 5 being the highest grade. The scale was intended to follow a normal distribution on a national level, with a mean of 3 and a standard deviation of 1. Up until 1962 yet another scale was used: A – Berömlig (Excellent) a – Med utmärkt beröm godkänd (Passed with great credit)
Slight changes in the wording of instructions, or the wording of the items themselves, may have a significant effect on the child's response. Data obtained from ratings rely totally on the rater's familiarity with the child. In practice, the rater of a preschooler, for example, may not be the same person that spends time with the child.
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.
The top grade, A, is given here for performance that exceeds the mean by more than 1.5 standard deviations, a B for performance between 0.5 and 1.5 standard deviations above the mean, and so on. [17] Regardless of the absolute performance of the students, the best score in the group receives a top grade and the worst score receives a failing grade.
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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While mean scores from Likert-type scales can be compared across individuals, scores from an ipsative measure cannot. To explain, if an individual was equally extraverted and conscientious and was assessed on a Likert-type scale, each trait would be evaluated singularly, i.e. respondents would see the item "I enjoy parties" and agree or disagree with it to whatever degree reflected their ...