MARK WILSON is Professor of Education at the University of California at Berkeley, specializing in the areas of educational assessment, educational evaluation and applied statistics. He has published 28 articles in refereed journals, edited four books, contributed 23 chapters to edited books, and made many presentations at meetings of professional groups.GEORGE ENGLEHARD is a professor of educational measurement and policy at Emory University. Dr. Englehard has published over 75 articles, test reviews and book chapters. he is co-editor with Dr. Mark Wilson of the series of volumes on rasch measurement entitled: Objective Measurement: Theory into Practice published by Ablex.

• MEASUREMENT PRACTICE Setting and Evaluating Performance Standards for High Stakes Writing Assessments, George Engelhardt Jr. and Belita Gordon Formative Evaluation of a Performance Assessment Scoring System, Susan Paulukonis, Carol Myford and Joan I. Heller Using Criterionreferenced Maps to Produce Meaningful Evaluation Measures: Evaluating Changes in Middle School Science Teachers' Assessment Perceptions and Practice, Lily Roberts Using the Rasch Model to Study Large Scale Physics Exams in Australia, Andrew Stephanou APPLICATONS INVOLVING RATERS AND JUDGES Raters and Single Prompt-to-Prompt Equating Using the FACETS Model in a Writing Performance Assessment, Yi Du and William L. Brown An Examination of Variation in Rater Severity Over Time: A Study in Rater Drift, Mark Wilson and Harry Case A Method to Compare Rater Severity Across Several Administrations, Thomas R. O'Neill and Mary Lunz Detecting Rater Effects in Simulated Data with a Multi-faceted Rasch Rating Scale Model, Edward W. Wolfe, Chris W. T. Chiu and Carol M. Myford Unmodelled Rater Discrimination Error, Peter Congdon Setting Standards on Performance Examinations, Mary E. Lunz MEASUREMENT THEORY A Multicomponent Rasch Model for Measuring Covert Processes: Application to Lifespan Ability Changes, Susan Embretson and Karen M. Schmidt Interpreting the Parameters of a Multidimensional Rasch Model, Wen-chung Wang, Mark Wilson and Raymond J. Adams The Implications of Halo Effects and Item Dependencies for Objective Measurement, T. F. McNamara and Raymond J. Adams Rasch Measurement Theory, The Method of Paired Comparisons, and Graph Theory, Mary Garner and George Engelhard Jr. A Procedure for Detecting Pattern Clustering in Measurement Designs, George Marcoulides and Zvi Drezner Examining Replication Effects in Rasch Fit Statistics, Richard M. Smith, Randall E. Schumaker, and M. Joan Bush APPENDIX The Ninth International Objective Measurement Workshop

MARK WILSON is Professor of Education at the University of California at Berkeley, specializing in the areas of educational assessment, educational evaluation and applied statistics. He has published 28 articles in refereed journals, edited four books, contributed 23 chapters to edited books, and made many presentations at meetings of professional groups.GEORGE ENGLEHARD is a professor of educational measurement and policy at Emory University. Dr. Englehard has published over 75 articles, test reviews and book chapters. he is co-editor with Dr. Mark Wilson of the series of volumes on rasch measurement entitled: Objective Measurement: Theory into Practice published by Ablex.

• MEASUREMENT PRACTICE Setting and Evaluating Performance Standards for High Stakes Writing Assessments, George Engelhardt Jr. and Belita Gordon Formative Evaluation of a Performance Assessment Scoring System, Susan Paulukonis, Carol Myford and Joan I. Heller Using Criterionreferenced Maps to Produce Meaningful Evaluation Measures: Evaluating Changes in Middle School Science Teachers' Assessment Perceptions and Practice, Lily Roberts Using the Rasch Model to Study Large Scale Physics Exams in Australia, Andrew Stephanou APPLICATONS INVOLVING RATERS AND JUDGES Raters and Single Prompt-to-Prompt Equating Using the FACETS Model in a Writing Performance Assessment, Yi Du and William L. Brown An Examination of Variation in Rater Severity Over Time: A Study in Rater Drift, Mark Wilson and Harry Case A Method to Compare Rater Severity Across Several Administrations, Thomas R. O'Neill and Mary Lunz Detecting Rater Effects in Simulated Data with a Multi-faceted Rasch Rating Scale Model, Edward W. Wolfe, Chris W. T. Chiu and Carol M. Myford Unmodelled Rater Discrimination Error, Peter Congdon Setting Standards on Performance Examinations, Mary E. Lunz MEASUREMENT THEORY A Multicomponent Rasch Model for Measuring Covert Processes: Application to Lifespan Ability Changes, Susan Embretson and Karen M. Schmidt Interpreting the Parameters of a Multidimensional Rasch Model, Wen-chung Wang, Mark Wilson and Raymond J. Adams The Implications of Halo Effects and Item Dependencies for Objective Measurement, T. F. McNamara and Raymond J. Adams Rasch Measurement Theory, The Method of Paired Comparisons, and Graph Theory, Mary Garner and George Engelhard Jr. A Procedure for Detecting Pattern Clustering in Measurement Designs, George Marcoulides and Zvi Drezner Examining Replication Effects in Rasch Fit Statistics, Richard M. Smith, Randall E. Schumaker, and M. Joan Bush APPENDIX The Ninth International Objective Measurement Workshop

MARK WILSON is Professor of Education at the University of California at Berkeley, specializing in the areas of educational assessment, educational evaluation and applied statistics. He has published 28 articles in refereed journals, edited four books, contributed 23 chapters to edited books, and made many presentations at meetings of professional groups.GEORGE ENGLEHARD is a professor of educational measurement and policy at Emory University. Dr. Englehard has published over 75 articles, test reviews and book chapters. he is co-editor with Dr. Mark Wilson of the series of volumes on rasch measurement entitled: Objective Measurement: Theory into Practice published by Ablex.

• MEASUREMENT PRACTICE Setting and Evaluating Performance Standards for High Stakes Writing Assessments, George Engelhardt Jr. and Belita Gordon Formative Evaluation of a Performance Assessment Scoring System, Susan Paulukonis, Carol Myford and Joan I. Heller Using Criterionreferenced Maps to Produce Meaningful Evaluation Measures: Evaluating Changes in Middle School Science Teachers' Assessment Perceptions and Practice, Lily Roberts Using the Rasch Model to Study Large Scale Physics Exams in Australia, Andrew Stephanou APPLICATONS INVOLVING RATERS AND JUDGES Raters and Single Prompt-to-Prompt Equating Using the FACETS Model in a Writing Performance Assessment, Yi Du and William L. Brown An Examination of Variation in Rater Severity Over Time: A Study in Rater Drift, Mark Wilson and Harry Case A Method to Compare Rater Severity Across Several Administrations, Thomas R. O'Neill and Mary Lunz Detecting Rater Effects in Simulated Data with a Multi-faceted Rasch Rating Scale Model, Edward W. Wolfe, Chris W. T. Chiu and Carol M. Myford Unmodelled Rater Discrimination Error, Peter Congdon Setting Standards on Performance Examinations, Mary E. Lunz MEASUREMENT THEORY A Multicomponent Rasch Model for Measuring Covert Processes: Application to Lifespan Ability Changes, Susan Embretson and Karen M. Schmidt Interpreting the Parameters of a Multidimensional Rasch Model, Wen-chung Wang, Mark Wilson and Raymond J. Adams The Implications of Halo Effects and Item Dependencies for Objective Measurement, T. F. McNamara and Raymond J. Adams Rasch Measurement Theory, The Method of Paired Comparisons, and Graph Theory, Mary Garner and George Engelhard Jr. A Procedure for Detecting Pattern Clustering in Measurement Designs, George Marcoulides and Zvi Drezner Examining Replication Effects in Rasch Fit Statistics, Richard M. Smith, Randall E. Schumaker, and M. Joan Bush APPENDIX The Ninth International Objective Measurement Workshop