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Introduction:

Likert scale, rating system, used in questionnaires, that is designed to measure people’s attitudes, opinions, or perceptions. Subjects choose from a range of possible responses to a specific question or statement; responses typically include “strongly agree,” “agree,” “neutral,” “disagree,” and “strongly disagree.” Often, the categories of response are coded numerically, in which case the numerical values must be defined for that specific study, such as 1 = strongly agree, 2 = agree, and so on. The Likert scale is named for American social scientist Rensis Likert, who devised the approach in 1932.

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Categories of response

Generally, a Likert scale presents the respondent with a statement and asks the respondent to rate the extent to which he or she agrees with it. Variations include presenting the subject with a question rather than a statement. The categories of response are mutually exclusive and usually cover the full range of opinion. Some researchers include a “don’t know” option, to distinguish between respondents who do not feel sufficiently informed to give an opinion and those who are “neutral” on the topic.

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