Learning and Evaluation/Archive/Learning modules/3Scales
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Part 1: Introduction
Part 2: Reliability & Validity Part 3: Question Construction
Part 4: Response Options
Part 5: Questionnaire structure |
Wikimedia Training Designing Effective Questions Menu
Scales
- Likert Scale
- A Likert Scale is very common and generally used to report the intensity of a feeling, belief, opinion or attitude. They typically include a scale from 3 to 7 items. Commonly used terms for the extremes of the scales include strongly agree/strongly disagree, too difficult/too easy, etc.
- Example
- To what extent do you agree or disagree with the following statement:
- The weekly edit-a-thon at the public library should continue:
- Strongly agree
- Somewhat agree
- Neither agree nor disagree
- Somewhat disagree
- Strongly disagree
- Alternatives to the Likert scale:
- Guttman scale – a set of questions or statements that if a respondent agrees with a question/statement, they agree to the previous ones.
- (1) "I am aware of Wikipedia" __Yes __No
- (2) "I use Wikipedia" __Yes __No
- (3) "I edit Wikipedia" __Yes __No
- (4) "I contribute to different Wikimedia projects" __Yes __No
- Semantic differential – measure affect or people’s positive or negative feelings towards an attitude. Typically a pair of adjectives, like good/bad, fast/slow, etc with 5 to 7 indicators drawn between them. For example:
| Bad | o | o | o | o | o | o | o | Good |
| Low quality | o | o | o | o | o | o | o | High quality |