Students' Achievement in Human Circulatory System Unit: The Effect of Reasoning Ability and Gender

The purpose of this study was to investigate the effect of gender and reasoning ability on the human circulatory system concepts achievement and attitude toward biology. A total of 47 10th-grade students participated in the study. Group Assessment of Logical Thinking, Attitude Toward Biology Scale, and the Human Circulatory System Concepts Test were administered to determine students' reasoning ability, attitude toward biology, and achievement, respectively. Two-way Multivariate Analysis of Variance (MANOVA) was used to analyze the data. The results revealed that although there was no statistically significant mean difference between boys and girls with respect to achievement and attitude toward biology, there was statistically significant mean difference between concrete and formal students with respect to achievement and attitude toward biology.