User Guide for the TIMSS International Database.pdf - TIMSS and ...

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C O N T E N T S Chapter 5: TIMSS Scaling Procedures...........................................................................5-1 5.1 The TIMSS Scaling Model ............................................................................................................... 5-1 5.2 The Unidimensional Random Coefficients Model ............................................................................. 5-2 5.3 The Multidimensional Random Coefficients Multinomial Logit Model.............................................. 5-3 5.4 The Population Model...................................................................................................................... 5-4 5.5 Estimation......................................................................................................................................... 5-5 5.6 Latent Estimation and Prediction ...................................................................................................... 5-6 5.7 Drawing Plausible Values................................................................................................................. 5-6 5.8 Scaling Steps ................................................................................................................................... 5-7 5.8.1 Drawing The International Calibration Sample ........................................................................................................................... 5-7 5.8.2 Standardizing the International Scale Scores............................................................................................................................... 5-7 Chapter 6: Student Achievement Scores.......................................................................6-1 6.1 Achievement Scores in the Student Files ......................................................................................... 6-1 6.2 Achievement Scores in the School Background Files....................................................................... 6-9 Chapter 7: Content and Format of Database Files ....................................................7-1 7.1 Introduction ..................................................................................................................................... 7-1 7.2 Data Files......................................................................................................................................... 7-2 7.2.1 Background Files ......................................................................................................................................................................................... 7-4 7.2.1.1 Student Background File ..........................................................................................................................................................................7-4 7.2.1.2 Teacher Background File ........................................................................................................................................................................7-4 7.2.1.3 School Background File............................................................................................................................................................................7-5 7.2.1.4 Identification Variables ..............................................................................................................................................................................7-5 7.2.1.5 Achievement Scores ...................................................................................................................................................................................7-7 7.2.1.6 Linking and Tracking Variables ............................................................................................................................................................7-8 7.2.1.7 International Background Variables ...............................................................................................................................................7-10 7.2.1.8 Variables Derived from Student, Teacher, and School Background Data ............................................................ 7-12 7.2.1.9 Sampling Variables..................................................................................................................................................................................7-15 7.2.2 Assessment Files.......................................................................................................................................................................................... 7-16 7.2.2.1 Written Assessment Files......................................................................................................................................................................7-16 7.2.2.2 Performance Assessment Files..........................................................................................................................................................7-16 7.2.2.3 Cognitive Item Variable Names .....................................................................................................................................................7-16 7.2.2.4 Performance Assessment Task Identifications.......................................................................................................................... 7-17 7.2.2.5 Cognitive Item Response Code Values .....................................................................................................................................7-18 7.2.2.6 Analysis By Mathematics and Science Content Area Reporting Categories...................................................... 7-18 7.2.2.7 Release Status of TIMSS Test Items and Performance Tasks...................................................................................... 7-23 7.2.2.8 Other Variables in the Student Assessment Files .................................................................................................................. 7-23 7.2.2.9 School Performance Assessment Files .........................................................................................................................................7-23 7.2.3 Coding Reliability Files........................................................................................................................................................................... 7--24 7.2.4 Student-Teacher Linkage Files............................................................................................................................................................. 7-28 7.2.5 Missing Codes in the International Data Files.......................................................................................................................... 7-29 7.2.6 National Data Issues Affecting the Usage of International Data Files...................................................................... 7-31 ii T I M S S D A T A B A S E U S E R G U I D E
C O N T E N T S 7.3 Codebook Files .............................................................................................................................. 7-33 7.3.1 Accessing the Codebook Files.......................................................................................................................................................... 7-33 7.3.2 Using the Codebooks ............................................................................................................................................................................ 7-34 7.4 Program Files ................................................................................................................................. 7-38 7.5 Data Almanacs .............................................................................................................................. 7-39 7.6 Test-Curriculum Matching Analysis Data Files ................................................................................ 7-42 Chapter 8: Estimating Sampling Variance...................................................................8-1 8.1 Computing Error Variance Using the JRR Method.......................................................................... 8-1 8.2 Construction of Sampling Zones for Sampling Variance Estimation ................................................. 8-2 8.3 Computing the JRR Replicate Weights ............................................................................................. 8-3 Chapter 9: Performing Analyses with the TIMSS Data: Some Examples .................9-1 9.1 Contents of the CDs ....................................................................................................................... 9-4 9.2 Creating SAS Data Sets and SPSS System Files.............................................................................. 9-5 9.3 Computing JRR Replicate Weights and Sampling Variance Using SPSS and SAS........................... 9-8 9.3.1 SAS Macro for Computing Mean and Percents with Corresponding Standard Errors (JACK.SAS)........ 9-8 9.3.2 SPSS Macro for Computing Mean and Percents with Corresponding Standard Errors (JACK.SPS) .... 9-16 9.4 Performing Analyses with Student-Level Variables ......................................................................... 9-21 9.5 Performing Analyses with Teacher-Level Variables......................................................................... 9-27 9.6 Performing Analyses with School-Level Variables ........................................................................... 9-33 9.7 Scoring the Items........................................................................................................................... 9-39 T I M S S D A T A B A S E U S E R G U I D E iii
Page 1 and 2: International Association for the E
Page 3: Contents Chapter 1: Overview of TIM
Page 7 and 8: C O N T E N T S Table 7.7 Classific
Page 9 and 10: Chapter 1 Overview of TIMSS and the
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C H A P T E R 4 D A T A C O L L E C
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C H A P T E R 6 A C H I E V E M E N
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C H A P T E R 9 P E R F O R M I N G
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R E F E R E N C E S Gonzalez, E.J.
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R E F E R E N C E S Wilson, M.R. (1
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