This report investigates gender disparity in spatial ability through a mental rotation experiment. The study involved 20 participants, 10 males and 10 females, with an average age of 29 years. The experiment used a mental rotation test to assess participants' ability to recognize three-dimensional objects. The independent variable was gender, and the dependent variable was the mental rotation scores. The results, analyzed using an independent sample t-test, indicated a significant difference between the mean scores of men and women, supporting the hypothesis that men exhibit better spatial ability. The report includes an introduction, methodology, results, discussion, and references, aligning with previous research in the field and acknowledging limitations of the study. The report also provides tables and figures presenting the findings, and highlights the implications of gender differences in spatial cognition, with suggestions for future research.