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How Many Points on YOUR Rating Scale?

Posted by on August 8th, 2012 Posted in: Practical Evaluation


In survey design workshops, we are often asked if rating scales designed to measure respondents’ opinions and attitudes should have an odd number of points, including a neutral mid-point (i.e., “Neither agree or disagree”); or if it’s better to have an even number of points, without a mid-point.  Our answer, which probably frustrates our participants to no end, is “it depends.”  You have to clearly think through what a “neutral” answer means and choose accordingly. Here is a link to a clever blog entry by Jane Davidson that makes this point very well and gives you ways to think about how many points your rating scales should have:

Boxers or briefs? Why having a favorite response scale makes no sense

(There are some insightful readers’ comments to this blog post that you might find interesting as well.)

Image of the author ABOUT Cindy Olney
Cindy Olney is the Assistant Director of the NNLM Evaluation Office. She leads NNLM's evaluation efforts, designs evaluation methods, and guides analysis and reporting of evaluation findings.

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