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

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C O N T E N T S Figure 9.17 SAS Control Statements for Performing Analyses with School-Level Variables (EXAMPLE3.SAS) ................................................................................................................ 9-35 Figure 9.18 SPSS Control Statements for Performing Analyses with School-Level Variables (EXAMPLE3.SPS) ................................................................................................................. 9-36 Figure 9.19 Extract of SAS Computer Output for Performing Analyses with School-Level Variables (EXAMPLE 3) ...................................................................................................... 9-37 Figure 9.20 Extract of SPSS Computer Output for Performing Analyses with School-Level Variables (EXAMPLE 3) ...................................................................................................... 9-38 Table 9.3 Definitions of Response Codes for the Multiple Choice Items in the Written Assessment Data Files ......................................................................................................... 9-39 Table 9.4 Definition of Response Codes for the Open-Ended Items in the Written Assessment and Performance Assessment Data Files .......................................................... 9-40 Figure 9.21 Extracted Sections of SAS Control Code Used to Convert Cognitive Item Response Codes to Correctness-Score Levels ..................................................................... 9-42 Figure 9.22 Extracted Sections of SPSS Control Code Used to Convert Cognitive Item Response Codes to Correctness-Score Levels ..................................................................... 9-43 vi T I M S S D A T A B A S E U S E R G U I D E
Chapter 1 Overview of TIMSS and the Database User Guide 1.1 Overview of the International Database This User Guide accompanies the TIMSS International Database for the Primary and Middle School Years (TIMSS Populations 1 and 2). The database, provided on two compact disks, contains achievement data (written test and performance assessment) and student, teacher, and school background data collected in 42 countries in 1995. Table 1.1 lists, for each of Populations 1 and 2, the countries for which written assessment and performance assessment data are included in the International Database. Each of these countries gave the IEA permission to release its national data. The TIMSS International Database contains the following, for each country for which internationally comparable data are available. • Mathematics and science proficiency scale scores • Students' responses to cognitive mathematics and science items • Students' responses to hands-on performance tasks • Students' background questionnaire data • Mathematics and science teacher background questionnaire data • School background questionnaire data • Test-curriculum matching analysis data • Sampling weights • International codebooks • SPSS and SAS control statement files • Data almanacs Given the size and complexity of TIMSS and the psychometric innovations employed, the TIMSS database is enormous and extremely complex. There are more than 500 files on the two compact disks containing data and documentation. Every effort has been made to organize the database and provide adequate documentation so that researchers can access the database for secondary analysis. Reading this User Guide is the first step in using the TIMSS database. This guide describes TIMSS, including the data collection instruments, sample design, and data collection procedures; documents the content and format of the data files in the international database; and provides example analyses. Appropriate use of the various files and variables, as well as special considerations arising from the complex design are described. There are four supplements to the User Guide containing copies of the TIMSS international background questionnaires, documentation of national adaptations of the international background questionnaire items, and documentation of derived variables reported in the international reports. This chapter of the User Guide provides an overview of TIMSS, briefly describes the contents of the database, and describes the contents of this User Guide. T I M S S D A T A B A S E U S E R G U I D E 1 - 1
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