معرفی
Johanna Heller is a researcher in the Faculty of Psychology at the Department of Developmental and Educational Psychology, actively contributing to intelligence and cognitive psychology research. Her work focuses on longitudinal analysis of IQ test score patterns and measurement invariance across cohorts.
Her research interests center on psychological assessment methodologies, particularly examining the Flynn effect through large-scale cohort analyses. She investigates how population-level cognitive performance evolves over time using advanced psychometric techniques including factor analysis and measurement-invariant modeling. Current work explores whether declining positive manifold effects explain inconsistent Flynn effect patterns in modern IQ testing.
Recent publications demonstrate specialization in IQ meta-analysis and cross-national cognitive comparisons, with emphasis on non-verbal spatial task performance and measurement non-invariance between cultural groups. Her 2024 paper in Intelligence: a multidisciplinary journal represents significant contribution to understanding cohort-based IQ fluctuations.
Heller actively participates in international research collaborations, with multiple 2025 conference presentations scheduled including meta-analyses spanning 116 years of IQ evolution and cross-national spatial task comparisons between Austrian and Filipino populations.
