The effect of "Frame of references" in the spatial perception : From a comparative study of cognitive development.

在人类中，当我们搜索一些物体并判断物体之间的距离（“地面优势效应”）时，视觉注意力会分布在“地面”表面，而不是“天花板”或“墙壁”表面。在这项研究中，我们研究了黑猩猩在类似地面或天花板的表面上是否表现出类似的搜索策略，这些表面由图像深度线索定义。研究结果表明，在黑猩猩和人类中，类似地面的表面有助于在上面寻找物体。

In humans, visual attention is distributed over a "ground" surface rather than "ceiling" or "wall" surfaces when we search for some objects and judge a distance between objects ("the ground dominance effect"). In this study, we examined whether chimpanzees show similar search strategy on the ground-like or the ceiling-like surfaces defined by pictorial depth cues. The findings indicate that in both chimpanzees and humans, a ground-like surface facilitated the search for objects on it.