Lawson Rebecca, Bülthoff Heinrich H
School of Psychology, University of Liverpool, Liverpool, England.
Percept Psychophys. 2008 Jul;70(5):853-77. doi: 10.3758/pp.70.5.853.
We investigated how the difficulty of detecting a shape change influenced the achievement of object constancy across depth rotations for object identification and categorization tasks. In three sequential matching experiments, people saw pictures of morphs between two everyday, nameable objects (e.g., bath-sink morphs, along a continuum between "bath" and "sink" end-point shapes). In each experiment, both view changes and shape changes influenced performance. Furthermore, the deleterious effects of view changes were strongest when shape discrimination was hardest. In our earlier research, using morphs of novel objects, we found a similar interaction between view sensitivity and shape sensitivity (Lawson, 2004b; Lawson & Bülthoff, 2006; Lawson, Bülthoff, & Dumbell, 2003). The present results extend these findings to familiar-object morphs. They suggest that recognition remains view-sensitive at the basic level of identification for everyday, nameable objects, and that the difficulty of shape discrimination plays a critical role in determining the degree of this view sensitivity.
我们研究了检测形状变化的难度如何影响在深度旋转过程中物体恒常性的达成，以用于物体识别和分类任务。在三个连续的匹配实验中，人们观看了两个日常可命名物体之间的变形图片（例如，浴缸 - 水槽变形，沿着“浴缸”和“水槽”端点形状之间的连续体）。在每个实验中，视角变化和形状变化都会影响表现。此外，当形状辨别最困难时，视角变化的有害影响最为强烈。在我们早期使用新物体变形的研究中，我们发现了视角敏感性和形状敏感性之间类似的相互作用（劳森，2004b；劳森和比尔托夫，2006；劳森、比尔托夫和邓贝尔，2003）。目前的结果将这些发现扩展到了熟悉物体的变形上。它们表明，在日常可命名物体的基本识别层面，识别仍然对视角敏感，并且形状辨别难度在确定这种视角敏感性程度方面起着关键作用。
