%0 Journal Article %T Scientific Reasoning in Elementary School Children: Assessment of the Inquiry Cycle %A Jessika Golle %A Julia Schiefer %A Kerstin Oschatz %A Maike Tibus %J Journal of Advanced Academics %@ 2162-9536 %D 2019 %R 10.1177/1932202X18825152 %X Scientific reasoning abilities are already developing in elementary-school-aged children and enable them to understand the world around them. The goal of the current study was to develop a new instrument for 8- to 10-year-old children in Grades 3 and 4 to measure their understanding of the steps of the scientific inquiry cycle (SIC). Such an understanding is essential for scientific reasoning as well as for inquiry-based learning approaches and, above all, for scientific practice. We developed and applied 15 items in a sample of 878 third- and fourth-grade students (n = 434, Grade 3; n = 435, Grade 4). As confirmed by item response theory (IRT) modeling, the items produced reliable scale scores. Furthermore, we explored the relations between childrenĄ¯s SIC performances, cognitive abilities, and epistemic beliefs. As expected, intelligence, text comprehension, experimentation strategies, and sophisticated epistemic beliefs were positively associated with childrenĄ¯s SIC performance, a finding that helps to establish initial evidence for the construct validity of the SIC test scores %K science %K inquiry %K instrument development %K elementary %K cognitive %K epistemic beliefs %U https://journals.sagepub.com/doi/full/10.1177/1932202X18825152