Perception
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Following Piaget and Inhelder's work, considerable evidence has accrued showing that young children have difficulty constructing the horizontal and vertical in particular drawing tasks. However, one recent study by Ibbotson and Bryant interpreted these difficulties as lying with angle reproduction rather than representation of horizontal and vertical. Their conclusion was that children of 3 to 5 years distort acute angles to look more like right angles. ⋯ One puzzling result emerged. The bisection effect only appeared with oblique-baseline figures. The tentative interpretation is that, when the baseline is horizontal or vertical, children can easily note that nonbisected figures are asymmetrical about vertical or horizontal axes, and hence resist the tendency to distort representations towards symmetry.