Characteristics
Domains assessed:
Numeracy
Specific context:
Health Promotion
Validation sample population age:
Adults: 18 to 64 years
Modes of administration in validation study:
Paper and pencil
Psychometrics
Number of items:
8
Sample size in validation study:
287
Administration Time (minutes):
5 minutes
Language of validated version:
English
Main article reference
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. Med Decis Making, 27(5):672-80.
Corresponding author
Angela Fagerlin
Description
Self-assessment of quantitative ability
Year Measure first Published: 2007
About This Measure
Categorical scoring:
No
Scoring categories:
Sum score
About the Validation of this Measure
Country where validated:
United States of America
Content validity:
Development of a subjective numeracy measure began with 42 items. Participants (N =364) completed both the 42-item SNS and an objective numeracy scale, providing ability to examine the correlations between the 2 scales. By examining correlations between each subjective item and the objective measure of mathematical ability, the questionnaire was shortened and other types of questions were determined to be included in the next round of testing.
