Perception of horizontality by male and female college students.
Understanding of the principle of horizontality was tested by having 314 university students draw the water surface on pictures of tilted bottles. Adults appear to have difficulty with this task and females performed much more poorly than males.
D000328:Adult; D000367:Age Factors; D003210:Concept Formation; D005260:Female; D005556:Form Perception; D006801:Humans; D008297:Male; D009949:Orientation; D012737:Sex Factors; D014796:Visual Perception