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Bryson Research 3 - Click to edit Master subtitle style...

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Click to edit Master subtitle style 5/24/11 Measurement Instruments Scales Reliability Validity
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5/24/11 One way of measuring a construct is through scaling Scaling is the branch of measurement that involves the construction of an instrument that associates qualitative constructs with quantitative metric units Learning to create scales is complicated and not simply putting a bunch of questions on a piece of paper A research scale is not simply a questionnaire, but some questionnaires/survey’s may be scales 22
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5/24/11 Likert Scale Psychometric scaling – is summative Likert item is not – provides info on questionnaire Taking social work research is lame 1. Strongly disagree 2. Disagree 3. Neither agree nor disagree 4. Agree
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5/24/11 Thurstone Scale Thurstone came up with 3 types of scales the method of equal-appearing intervals ; the method of successive intervals ; and, the method of paired comparisons
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5/24/11 Guttman or Cumulative Scaling
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