An Only Child versus a Child with a Sibling: Difference In Perfectionism and the Big Five Personality Traits
INTRODUCTION: Declining fertility and rising numbers of only children necessitate understanding their specific characteristics. The main objective of the present research study is to map the area of sibling constellations. It focuses on perfectionism and the Big Five personality traits.
METHODS: Online data were collected from 1,384 Slovak participants aged 15-74 (133 only children, 1,251 with siblings) using the Frost Multidimensional Perfectionism Scale (FMPS) and the Big Five Inventory (BFI 10). MannWhitney U tests compared groups, with effect sizes (AUC) calculated. Spearman’s...