In the context of Programme for International Student Assessment (PISA), paradoxical findings concerning the relationship between questionnaire scales and student achievement are often documented. These questionnaire scales are found to correlate positively with student achievement within countries at the individual level, but negatively at the…

Secondary data analyses of large-scale international student assessment at the country level often reveal that educational systems which are high in academic achievement are found low in attitudinal outcomes of schooling, and vice versa. This is contrary to the non-negative attitude-achievement relationship frequently found at the student…

Self-reports are an indispensable source of information in education research but they are often affected by heterogeneity in reporting behavior. Failing to correct for this heterogeneity can lead to invalid comparisons across groups. The researchers use the parametric anchoring vignette method to correct for cross-country incomparability of…