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Scaling Procedures For Icils Questionnaire Items, Wolfram Schulz, Tim Friedman Dec 2014

Scaling Procedures For Icils Questionnaire Items, Wolfram Schulz, Tim Friedman

Dr Tim Friedman

This chapter describes the procedures used to scale the ICILS questionnaire data (for students, teachers, school principals, and ICT coordinators) and the indices based on them. Two general types of indices could be distinguished, both of which derived from the ICILS questionnaires: 1. Simple indices constructed through arithmetical transformation or simple recoding, for example, ratios between ICT and students or an index of immigration background based on information about the country of birth of students and their parents; and 2. Scale indices derived from scaling of items, a process typically achieved by using item response modeling of dichotomous or Likert-type …


Iccs 2009 Encyclopedia : Approaches To Civic And Citizenship Education Around The World, John Ainley, Wolfram Schulz, Tim Friedman May 2013

Iccs 2009 Encyclopedia : Approaches To Civic And Citizenship Education Around The World, John Ainley, Wolfram Schulz, Tim Friedman

Dr Tim Friedman

The International Civic and Citizenship Education Study (ICCS 2009) investigated the ways in which countries prepare their young people to undertake their roles as citizens. It studied student knowledge and understanding of civics and citizenship as well as student attitudes, perceptions, and activities related to civics and citizenship. ICCS also examined differences among countries in relation to these outcomes of civic and citizenship education, and it explored how differences across countries relate to student characteristics, school and community contexts, and national characteristics. Thirty-eight countries participated in ICCS 2009. Among these were five from Asia, 26 from Europe, six from Latin …