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FIGURE 9.20 The mental rotation test This is a test of spatial abilities. See inverted answer below.
Perceptual and Motor Skills, A Group Test of Three-Dimentional Spatial Visualization , Steven G. Vandenberg and Allan R. Ruse, Volume 47, Issue 2, October 1978: pp 599–604(doi: 10.2466/pms.1978.47.2.599).