Characteristics
Domains assessed:
Application/function, Information seeking: Document, Numeracy
Specific context:
General
Validation sample population age:
Adults: 18 to 64 years
Modes of administration in validation study
:
Computer-based
Time Cut-off:
0 minutes
Assessment:
Objective
Psychometrics
Number of items:
13
Sample size in validation study:
987
Administration Time (minutes):
9 minutes
Language of validated version:
English
Main article reference
Galesic, M., & Garcia-Retamero, R. (2011). Graph literacy: a cross-cultural comparison. Med Decis Making, 31(3):444-57.
Link to articleCorresponding author
Mirta Galesic
Description
To assess the graphical literacy skills needed to understand risks in the health domain.
Year Measure first Published: 2011
About This Measure
Categorical scoring:
No
Scoring categories:
Percent correct
Reliability: Test-retest correlation:
average item correlations: 0.42 in U.S.
About the Validation of this Measure
Country where validated:
Germany, Spain, United States of America
Content validity:
Scale based on traditional division of graph comprehension skills: 1) abilty to read the data, 2) ability to read between the data, and 3) ability to read beyond the data. All graphs embedded in a medical context and used frequently used graph types.
Criterion validity:
Convergent: IALSΩ +NAALS +PISAф r=0.50 U.S.; Concurrent: Education r=0.54 U.S.; Divergent: S-TOFHLA r=0.19
Reliability notes:
Correlations between individual items and total score ranged from 0.07 to 0.63, with a mean of 0.38.
