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	Model bayesowski z efektami mieszanymi	Modelowanie wielopoziomowe
Dziedzina	Statystyka	Statystyka w badaniach
Rodzina	Regression model	Process / pipeline
Rok powstania	1990s–2000s (modern Bayesian MCMC era)	1992
Twórca	Gelman, Hill, and the broader Bayesian hierarchical modeling tradition	Anthony Bryk and Stephen Raudenbush
Typ	Bayesian regression model	Method
Źródło pierwotne	Gelman, A., & Hill, J. (2007). Data Analysis Using Regression and Multilevel/Hierarchical Models. Cambridge University Press. ISBN: 978-0521686891	Bryk, A. S., & Raudenbush, S. W. (1992). Hierarchical Linear Models: Applications and Data Analysis Methods. SAGE Publications.
Inne nazwy	Bayesian multilevel model, Bayesian random effects model, Bayesian LME, Bayesian hierarchical mixed model	HLM, mixed-effects models, random effects models, MLM
Pokrewne	5	3
Podsumowanie	The Bayesian mixed effects model extends the classical mixed effects framework by placing prior distributions on all parameters — fixed effects, random effect variances, and residual variance — and updating them with data to produce full posterior distributions. This provides coherent uncertainty quantification for both population-level and group-level effects simultaneously.	Multilevel modeling (also called hierarchical linear modeling, mixed-effects modeling) is a statistical framework for analyzing data organized in nested or clustered structures—students within schools, patients within hospitals, repeated measures within individuals. Developed by Bryk and Raudenbush (1992), it accounts for dependency among observations and partitions variance into levels (within-cluster and between-cluster), enabling valid inference and revealing context effects. Essential in education, medicine, organizational research, and any field where data have natural hierarchies.