Subjective Numeracy Scale (SNS)

Fagerlin, A., Zikmund-Fisher, B. J., Ubel, P. A., Jankovic, A., Derry, H. A., & Smith, D. M. (2007). Measuring numeracy without a math test: Development of the Subjective Numeracy Scale. Medical Decision Making, 27(5), 672-680. doi: 10.1177/0272989X07304449

The measure: Fagerlin et al. (2007) SNS.pdf

	Table of Contents
	Description
	History of Use
	References

Description:

Purpose		The SNS was designed to assess individuals' beliefs about their mathematical skills and their preferred presentation of numerical information.
Questions		8 items using 6-point scales (varies)
Sub-scales		2 sub-scales: Cognitive abilities (Cognitive) Preferences for the display of numerical information (Preferences)
Domain		Medical decision making
Psychometrics
Sample items		How good are you at working with fractions? (Cognitive) When reading the newspaper, how helpful do you find tables and graphs that are parts of a story? (Preferences)

References:

Scale:

Fagerlin, A., Zikmund-Fisher, B. J., Ubel, P. A., Jankovic, A., Derry, H. A., & Smith, D. M. (2007). Measuring numeracy without a math test: Development of the Subjective Numeracy Scale. Medical Decision Making, 27(5), 672-680. doi: 10.1177/0272989X07304449

Validation:

Zikmund-Fisher, B. J., Smith, D. M., Ubel, P. A., & Fagerlin, A. (2007). Validation of the Subjective Numeracy Scale (SNS): Effects of low numeracy on comprehension of risk communications and utility elicitations. Medical Decision Making, 27(5), 663-671. doi: 10.1177/0272989X07303824

Uses:

Nelson, W., Reyna, V. F., Fagerlin, A., Lipkus, I., & Peters, E. (2008). Clinical implications of numeracy: Theory and practice. Annals of Behavioral Medicine, 35(3), 261-274. doi: 10.1007/s12160-008-9037-8.

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