However, several items failed to meet standards of methodological quality in regards to a lack of increase by age, preferable average response rate or correlation to the scale in total.
Þónokkur atriði uppfylltu ekki kröfur varðandi próffræðilega eiginleika, ýmist varðandi stíganda eftir aldri, rétt svarhlutfall eða fylgni við prófþátt.