Dandan Liao, University of Maryland

Doubly Latent Multilevel Structural Modeling: An Illustration of School Climate Influences on Student Outcomes - Yuane Jia, Rutgers University; Timothy R. Konold, University of Virginia; Dewey G. Cornell, University of Virginia

Airbag Moderation: The Definition and Implementation of a New Research Hypothesis - James Hall, University of Southampton; Lars-Erik Malmberg, University of Oxford; Ariel Mariah Lindorff, University of Oxford; Nicole Baumann, University of Warwick; Pam M. Sammons, University of Oxford

Using n-Level Structural Equation Models for Causal Modeling in Fully Nested, Partially Nested, and Cross-Classified Randomized Controlled Trials - Yaacov Petscher, The Florida Center for Reading Research; Chris Schatschneider, Florida State University

A Web-Based Application for Constrained Optimal Sample Allocation in Design of Multilevel Randomized Experiments - Metin Bulus, University of Missouri - Columbia; Nianbo Dong, University of Missouri - Columbia; Benjamin Kelcey, University of Cincinnati; Jessaca K. Spybrook, Western Michigan University

Optimal Design of Cluster Randomized Trials Under Condition- and Unit-Specific Cost Structures - Zuchao Shen, University of Georgia; Benjamin Kelcey, University of Cincinnati

Elizabeth A. Sanders, University of Washington

Allen G. Harbaugh, Boston University

A Mediated Measurement Model to Investigate Whether Test Scores Are Invariant to the Test-Taking Strategies - Amery D. Wu, University of British Columbia; Shun-Fu Hu, The University of British Columbia; Michelle Yue Chen, Paragon Testing Enterprises / The University of British Columbia; Lok Heng Chau, The University of British Columbia

Getting Better All the Time? Evaluating Multilevel Longitudinal Measurement Invariance in School Climate Research - Jonathan Schweig, The RAND Corporation; Kun Yuan, Association of American Medical Colleges

Cross-Cultural Differences in Category Usage in the PANAS Item Pools Using the Nominal Response Model - Sohee Kim, University of South Alabama; Ki Matlock Cole, Oklahoma State University; Hangshim Lee, Konkuk University

Individualized Assessment: Detection of Learning via Score-Based Tests - Ting Wang, American Board of Anesthesiology; Huaping Sun, The American Board of Anesthesiology; Yan Zhou, The American Board of Anesthesiology ; Ann Elizabeth Harman, American Board of Anesthesiology (ABA)

Kimberly F. Colvin, University at Albany - SUNY

Investigating the Performance of Item Response Theory Proficiency Estimators Under Multistage Testing - Liuhan (Sophie) Cai, Measured Progress

Item Parameter Recovery of the Two-Parameter Logistic (2PL) Testlet Model With Different Estimation Methods - Yong Luo, National Center for Assessment, Saudi Arabia

Recovery of Theta From Early Misfit in Multistage Adaptive Testing - Fang Peng, University of Illinois at Chicago; Kirk A. Becker, Pearson