ACT Research Report Series: 2000–2008

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2008
2008-1	Benefits of Additional High School Course Work and Improved Course Performance in Preparing Students for College Richard Sawyer.
2007
2007-1	An Investigation of the Performance of the Generalized S-X2 Item-Fit Index for Polytomous IRT Models Taehoon Kang, Troy T. Chen.
2007-2	Using Hierarchical Modeling to Examine Course Work and ACT Score Relationships Across High Schools Julie P. Noble, Diane Schnelker.
2006
2006-1	Student Achievement, Behavior, Perceptions, and Other Factors Affecting ACT Scores Julie P. Noble, William L. Roberts, Richard L. Sawyer.
2005
2005-1	School-level Benefits of Using PLAN Over Time Natasha J. Williams, Julie P. Noble.
2005-2	Modeling the Effectiveness of Developmental Instruction Yelena Perkhounkova, Julie Noble, Richard Sawyer.
2005-3	Using ACT Assessment Scores to Set Benchmarks for College Readiness Jeff Allen, Jim Sconing.
2004
2004-1	Academic and Noncognitive Variables Related to PLAN Scores William L. Roberts, Julie P. Noble.
2004-2	Differential Grading Standards Among High Schools David J. Woodruff, Robert L. Ziomek.
2004-3	Inventory of Work-Relevant Values: 2001 Revision Becky L. Bobek, Paul A. Gore.
2004-4	High School Grade Inflation From 1991 to 2003 David J. Woodruff, Robert L. Ziomek.
2004-5	IRT Scale Linking Methods for Mixed-Format Tests Seonghoon Kim, Won-Chan Lee.
2003
2003-1	The Effects of Using ACT Composite Score and High School Average on College Admission Decisions for Racial/Ethnic Groups Julie Noble.
2003-2	The Effects of Using EPAS^® Programs on PLAN and ACT Assessment Performance Julie Noble.
2003-3	The Relationship Between Schedule Type and ACT Assessment Scores: A Longitudinal Study Matt T. Harmston, Ann-Maureen Pliska, Robert L. Ziomek & Donald G. Hackmann.
2003-4	Constructing a Universal Scale of High School Course Difficulty Dina Bassiri & E. Mathew Schulz.
2003-5	Relationships Between EPAS Scores and College Preparatory Course Work in High School David J. Woodruff.
2003-6	A Comparison of Two Linking Methods for Multidimensional IRT Scale Transformations Kyung-Seok Min, Jong-Pil Kim.
2002
2002-1	Data Sparseness and Online Pretest Item Calibration/Scaling Methods in CAT Jae-Chun Ban, Bradley A. Hanson, Qing Yi & Deborah J. Harris.
2002-2	Bayesian Statistical Inference for Coefficient Alpha Jun Corser Li & David J. Woodruff
2002-3	Controlling Item Allocation in the Automated Assembly of Multiple Test Forms Judy Spray, Chuan-Ju Lin & Troy T. Chen
2002-4	Predicting Different Levels of Academic Success in College Using High School GPA and ACT Composite Score Julie Noble & Richard Sawyer
2002-5	Interval Estimation for True Scores Under Various Scale Transformations Won-Chan Lee, Robert L. Brennan & Michael J. Kolen
2001
2001-1	Suggestions for the Evaluation and Use of Concordance Results Bradley A. Hanson, Deborah J. Harris, Mary Pommerich, James A. Sconing & Qing Yi.
2001-2	Controlling for Rater Effects When Comparing Survey Items With Incomplete Likert Data E. Matthew Schulz & Anji Sun.
2001-3	Trends in ACT Mathematics and Science Reasoning Achievement, Curricular Choice, and Intent for College Major:1995–2000 Matt T. Harmston & Ann-Maureen Pliska.
2001-4	Alternatives to the Grade Point Average as Measures of Academic Achievement in College Pui-Wa Lei, Dina Bassiri & E. Matthew Schulz.
2000
2000-1	Issues in Creating and Reporting Concordance Results Based on Equipercentile Methods Mary Pommerich, Bradley A. Hanson, Deborah J. Harris & James A. Sconing.
2000-2	Effects of Scale Transformation and Test Termination Rule on the Precision of Ability Estimates in CAT Qing Yi, Tianyou Wang & Jae-Chun Ban.
2000-3	Validating Two-Stage Course Placement Systems When Data Are Truncated Jeff Schiel & Matt Harmston.
2000-4	Estimating Item Parameters from Classical Indices for Item Pool Development with a Computerized Classification Test Chi-Yu Huang, John C. Kalohn, Chuan-Ju Lin & Judith Spray.
2000-5	Science Course Taking, Out-of-Class Science Accomplishments, and Achievement in the High School Graduating Class of 1998 Gail T. McLure & John W. McLure.
2000-6	Does Self-Stereotyping Affect Performance on the ACT Assessment? Peggy Loveless.
2000-7	Posttesting Students to Assess the Effectiveness of Remedial Instruction in College Richard Sawyer & Jeff Schiel.
2000-8	Effects of Item-Selection Criteria on Classification Testing with the Sequential Probability Ratio Test Chuan-Ju Lin & Judith Spray.
2000-9	Effects of Differential Prediction in College Admissions for Traditional- and Nontraditional-Aged Students Julie Noble.
2000-10	Procedures for Computing Classification Consistency and Accuracy Indices with Multiple Categories Won-Chan Lee, Bradley A. Hanson, & Robert L. Brennan.
2000-11	A Comparative Study of Online Pretest Item Calibration/Scaling Methods in CAT Jae-Chun Ban, Bradley A. Hanson, Tianyou Wang, Qing Yi, & Deborah J. Harris.