Abstract
Scientific communication skills into competencies required of students in the 21st century scientific communication must be owned that is orally or in writing. This research aims to develop assessment instruments scientific communication skills of students in physics. Scientific communication skills assessment instrument is a synthesis developed into five indicators. Instruments tested on students of SMAN 6 Yogyakarta. The instrument was developed to test the construct using LISREL. LISREL analysis used in the form Confirmatory Factor Analysis (CFA) to see how the fit between indicators developed models. The results showed that scientific communication instrument had a reliability 0.82. Criteria for each item has a value infit meansquare 1:01 with grain criteria fit with the model of Rasch (meansquare infit ≤ 0.77 ≤ 1.33) with both criteria. Loading factor of each item instrument has a value of> 0.3. The results validate the results obtained construct second order confirmatory factor analysis (CFA) on 17 items results showed that p-value = 0.27505 (p> 0.05) and RMSEA = 0.031 (RMSEA> 0.05). By loading factor> 0.3 and t-value> 1.95 so that the item is valid and thus fit modelDengan scientific instruments developed communication skills can be used to measure scientific communication skills of students in physics.
Published Version
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