In this study, the prediction level of the fourth-grade students' scientific attitudes on reflective thinking skills for problem solving was examined. The research was conducted using the correlational survey model and the sample of the study consisted of 468 students identified through simple random sampling. According to the findings the students had a low level of reflective thinking skills for problem solving and scientific attitudes. It can be said that there is a significant and positive correlation between the fourth-grade students' scientific attitudes with reflective thinking skills for problem solving. Besides, while the model established for the prediction of the reflective thinking of the fourth-grade students by the scientific attitude is significant, reflective thinking for problem solving of the fourth-grade students was strongly explained by scientific attitudes.