What is the Spearman-Brown Formula?

QuantFish instructor and statistical consultant Dr. Christian Geiser explains the Spearman-Brown formula for composite reliability estimation in classical test theory (CTT). Also check out his other videos on CTT & reliability estimation: https://youtube.com/playlist?list=PL-kVjeOVYChrJnMGZ8W_WODnUEGuRP9fM&si=y9OV4o3xsAmod1w6 #Mplus #statistics #SPSS #geiser #quantfish #statisticstutorials #reliability #cronbachsalpha #psychometrics #ctt #cfa #sem #statisticalanalysis #stats #psychometry #measurement FREE weekly stats tips: https://mailchi.mp/goquantfish.com/newsletter FREE statistics workshops: https://www.goquantfish.com/collections/free-courses Get in touch with Dr. Geiser: https://christiangeiser.com Get Dr. Geiser's FREE MPLUS FOR BEGINNERS COURSE: https://www.goquantfish.com/courses/mplus-for-beginners FREE POWER ANALYSIS & SIMULATION MINI-COURSE: https://www.goquantfish.com/courses/sample-size-planning-in-mplus CLASSICAL TEST THEORY IN SPSS & MPLUS COURSE: https://www.goquantfish.com/courses/classical-test-theory-analysis-in-spss-and-mplus PSYCHOMETRICS COURSE BUNDLE (CTT & IRT): https://www.goquantfish.com/bundles/the-psychometrics-bundle Dr. Geiser's BOOKS: ****Data Analysis with Mplus: https://amzn.to/3eg9vY4 ****Longitudinal Structural Equation Modeling with Mplus: https://amzn.to/3ekOLOW ON-DEMAND MPLUS COURSES: ****SEM with Mplus: https://www.goquantfish.com/courses/mplus-from-scratch ****Multilevel Modeling with Mplus: https://www.goquantfish.com/courses/multilevel-modeling-with-mplus ****Latent Class Analysis with Mplus: https://www.goquantfish.com/courses/latent-class-analysis-with-mplus GET IN TOUCH with DR. GEISER: ****Website: https://christiangeiser.com ABOUT THIS INSTRUCTOR: Dr. Christian Geiser is a quantitative psychologist, author of two books on Mplus, and a leader in the development of latent variable techniques for complex data. With his accessible books and sought-after workshops, he has helped thousands of researchers and students around the world to achieve their analytic goals. ABOUT QUANTFISH: We bring top-level stats training from the world's leading methodologists to researchers and students all over the world. Learn more at https://goquantfish.com. Some affiliate links may be included at no additional cost to purchasers.