Measurement invariance of psychological test batteries is an essential quality criterion when the test batteries are administered in different cultural and language contexts. The purpose of this study
The study investigated differences in the Five-Factor Model (FFM) domains and facets across adulthood. The main questions were whether personality scales reflected coherent units of trait development
The primary goal of this study was to examine children’s social skills (SS) development by comparing various factors (countries, genders, and age groups). Additionally, this study aimed to analyze how