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ICCS 2009 Technical Report - IEA

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Table 12.16: Item parameters for scales reflecting students’ expected participation in political protestScale or Item Question/Item Wording Delta Tau(1) Tau(2) Tau(3)Legal ProtestThere are many different ways how citizens may protest against things they believe are wrong.Would you take part in any of the following forms of protest in the future?IS2P31A Writing a letter to a newspaper -0.24 -1.74 -0.01 1.74IS2P31B Wearing a badge or t-shirt expressing your opinion -0.05 -1.60 0.10 1.51IS2P31C Contacting an 0.35 -1.83 0.28 1.55IS2P31D Taking part in a peaceful march or rally -0.11 -1.50 -0.04 1.54IS2P31E Collecting signatures for a petition -0.26 -1.55 -0.01 1.55IS2P31F Choosing not to buy certain products -0.15 -1.54 -0.09 1.64IllegalProtestThe confirmatory factor analysis, which assumed a two-factor model, suggested a close modelfit, and the factor loadings indicated a high degree of item reliability (see Figure 12.10). ItemIS2P31F (“choosing not to buy certain products”) had a somewhat lower factor loading thanthe other items measuring LEGPROT (“expected participation in legal protest”). There was amoderate positive correlation between the two latent factors of r = 0.42.There are many different ways how citizens may protest against things they believe are wrong.Would you take part in any of the following forms of protest in the future?IS2P31G Spray-painting protest slogans on walls 1.37 -2.06 0.60 1.47IS2P31H Blocking traffic 1.85 -2.14 0.73 1.41IS2P31I Occupying public buildings 1.92 -2.02 0.64 1.37Figure 12.10: Confirmatory factor analysis of items measuring students’ expected participation in protestactivitiesIS2P31A0.501.00LEGPROT0.700.680.700.740.760.57IS2P31BIS2P31CIS2P31D0.540.500.460.42IS2P31E0.42IS2P31F 0.681.00ILLPROT0.810.900.86IS2P31G0.34IS2P31H0.18IS2P31I 0.26RMSEA 0.045NNFI 0.96CFI 0.97188<strong>ICCS</strong> <strong>2009</strong> technical report

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