In this paper we present some results of a survey that aimed to examine the development of spatial abilities of architect students at Ybl Miklós Faculty of Architecture and Civil Engineering. The survey was carried out by the world-wide Mental Cutting Test (shortly MCT). Among others, we examined the impact of the studies of the discipline Descriptive Geometry on MCT test results; analized as the effect of some recorded factors, as the distribution in different subject groups and found signs of considerable differences between genders. During data processing we used statistical methods, the conclusions extracted from data evaluation were submitted to hypothesis testing. We also try to explain the observations.