Judged: two independent readers; copy check clear.
invariance
invariance Invariance in assessment means a measure works the same way across different groups, so score differences are more likely to reflect real differences in the underlying trait rather than bias in the items.
Invariance in assessment means a measure works the same way across different groups, so score differences are more likely to reflect real differences in the underlying trait rather than bias in the items. Establishing this supports fair and meaningful comparisons between groups.