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involved in predicting students’ understanding of these changes are related to the dependent variables and to each other. First it confirms that the dimensions of structure understanding, i.e., the particulate and the collective dimensions, both have an effect on students’ understanding of the changes of states. This prior knowledge seems to be a determining factor of students’ performance. Moreover, this knowledge is being affected by individual differences, however, not as it had initially been hypothesized. Logical thinking affects both the particulate and the collective dimension, while fielddependence/ independence affects only the collective dimension.Convergence/divergence does not have an immediate impact on any of the two dimensions. The standardized effects are shown in Fig. 2 and Table 2. Fig. 2 shows overall the relations that were sought by application of structural equation modeling. The role of the three cognitive variables is adequately supported by revealing their direct and indirect effects on Understanding changes of state (UnChSt). LTH demonstrates direct effects on UnChSt and indirect ones via the particulate and the collective dimensions. FDI has an indirect effect via the collective dimension and CD demonstrates only direct effects on the latent variable UnChSt.Analisis jalur, yang bertujuan untuk mengungkapkan efek variabel independen (LTH FDI, CD, dimensi partikulat dan kolektif) pada pemahaman perubahan negara (perubahan) dan interpretasi (INTERPRET), digambarkan dalam Fig. 3. Operasi LTH muncul, disertai ilmu prasyarat, perlu untuk memahami perubahan negara dan menyediakan interpretasi dari perubahan ini, yang oleh semua account adalah pemahaman yang lebih dalam. Hasil ini konsisten dengan temuan lainnya dalam studi sebelumnya yang dilaporkan supremasi berpikir logis sebagai variabel prediktor pada prestasi sains (rusdin et al., 1987; Lawson dan Thompson, 1988; Johnson dan Lawson 1998; Kang et al, 2005). Apa yang lebih, SEM analisis mendukung hipotesis bahwa suatu tingkat yang memadai dari berpikir logis diperlukan bagi siswa untuk memahami sifat partikel zat dan perubahan negara nya.
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