The tests of content validity measure the fit of individual items to the model, the estimation errors of item parameter values, and the spacing and range of item parameter values, relative to the distribution of person parameter values.
kern-0pt} {left( {b + 1} right)}}}}) (t_{text{m}} = bc) (t_{text{m}} = frac{{ln left( {{a mathord{left/ {vphantom {a b}} right. kern-0pt} b}} right)}}{b}) – – means the item of the model is nonexistent.
The relative errors of pressure gradients between calculated and experimental results are generally higher than 300%, but these can be reduced to less than 10% while the oil flow friction item of the model is multiplied by a modified coefficient β of 0.1907.
In this study, each measurement item of the model loads with a t-value above 1.96 on its latent construct.
Convergent validity is established when each measurement item of the model loads with a t-value above 1.96 (rejecting the null hypothesis of no effect) on its latent construct meaning that each measurement item correlates strongly with its theoretical pre-specified construct.
A good overall fit of persons and items to the model was found: the items of the CD-RISC allow the identification of a relatively wide range of behaviors evaluating resilience, and the average reliability of the scale was aceptable.
A good overall fit of persons and items to the model was found: the items of the CD-RISC allow the identification of a relatively wide range of behaviors evaluating resilience.
The fit of the individual items was checked revealing misfit of several items to the model expectation.
The fit of several items to the model was evaluated using the weighted mean square (wMNSQ) approach.
Rasch fit statistics describe the fit of the items to the model.
