Students Confident in Physics Scale, Eighth Grade
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1 Students Confident in Physics Scale, Eighth Grade he Students Confident in Physics (SCP) scale was created based on students degree of agreement with the eight statements described below. Items in the IMSS 2015 Students Confident in Physics Scale, Eighth Grade BSBP36A BSBP36B* BSBP36C* BSBP36D BSBP36E BSBP36F BSBP36G* BSBP36H* rend item item was included in the same scale in IMSS 2011 and was used for linking the IMSS 2011 and IMSS 2015 scales. CHAPER 15: CREAING AND INERPREING HE IMSS 2015 CONEX QUESIONNAIRE SCALES MEHODS AND PROCEDURES IN IMSS
2 Item Parameters for the IMSS 2015 Students Confident in Physics Scale, Eighth Grade Item delta tau_1 tau_2 tau_3 Infit BSBP36A BSBP36B* BSBP36C* BSBP36D BSBP36E BSBP36F BSBP36G* BSBP36H* *Reverse coded Scale ransformation Constants for the IMSS 2015 Students Confident in Physics Scale, Eighth Grade Scale ransformation Constants A = B = ransformed Scale Score = Logit Scale Score SOURCE: IEA's rends in International Mathematics and Science Study IMSS 2015 CHAPER 15: CREAING AND INERPREING HE IMSS 2015 CONEX QUESIONNAIRE SCALES MEHODS AND PROCEDURES IN IMSS
3 Equivalence able of Raw and ransformed Scale Scores for the IMSS 2015 Students Confident in Physics Scale, Eighth Grade Raw Score ransformed Scale Score Cutpoint SOURCE: IEA's rends in International Mathematics and Science Study IMSS 2015 CHAPER 15: CREAING AND INERPREING HE IMSS 2015 CONEX QUESIONNAIRE SCALES MEHODS AND PROCEDURES IN IMSS
4 Cronbach s Alpha Reliability Coefficient and Principal Components Analysis of the Items in the IMSS 2015 Students Confident in Physics Scale, Eighth Grade Country Cronbach s Alpha Reliability Coefficient Percent of Variance Explained BSBP36A BSBP36B* Component Loadings for Each Item Georgia Hungary Kazakhstan Lebanon Lithuania Malta Morocco Russian Federation Slovenia Sweden *Reverse coded BSBP36C* BSBP36D BSBP36E BSBP36F BSBP36G* BSBP36H* SOURCE: IEA's rends in International Mathematics and Science Study IMSS 2015 CHAPER 15: CREAING AND INERPREING HE IMSS 2015 CONEX QUESIONNAIRE SCALES MEHODS AND PROCEDURES IN IMSS
5 Relationship Between the IMSS 2015 Students Confident in Physics Scale, Eighth Grade, and IMSS 2015 Science Achievement Country Georgia 0.26 Hungary 0.33 Kazakhstan 0.17 Lebanon 0.33 Lithuania 0.27 Malta 0.44 Morocco 0.31 Russian Federation 0.25 Slovenia 0.35 Sweden 0.34 International Median 0.32 Pearson s Correlation with Science Achievement (r) (r 2 ) Variance in Science Achievement Accounted for by Difference Between Regions of the Scale (η 2 ) SOURCE: IEA's rends in International Mathematics and Science Study IMSS 2015 CHAPER 15: CREAING AND INERPREING HE IMSS 2015 CONEX QUESIONNAIRE SCALES MEHODS AND PROCEDURES IN IMSS
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