Longitudinell invarians av barndomsatferd og temperament: løsrive endringer, tilstander, egenskaper og målefeil

Longitudinal invariance is a fundamental feature to evaluate when non-directly observed constructs are assessed repeatedly across time. Here we propose to test the longitudinal invariance at the item level for the scales and questionnaires with repeated measures related to childhood developmental behaviours (autism spectrum disorder, psychological symptomatology, and temperament) used in the MoBa study. The scales under longitudinal validation are ASQ (data from 6 months, 18 months, three years and five years), M-CHAT and ESAT (18 months and three years), CBCL (18 months, three years and five years), and Activity and Shyness Temperament Questionnaire (EAS)