Biblio
Improving measurement in health education and health behavior research using item response modeling: introducing item response modeling. Health education research, 21, i4–i18.
. (2006). 
Improving measurement in health education and health behavior research using item response modeling: comparison with the classical test theory approach. Health Education Research, 21, i19–i32.
. (2006). 
Improving measurement in health education and health behavior research using item response modeling: comparison with the classical test theory approach. Health education research, 21, i19–i32.
. (2006).