自我和物体为参照系的心理旋转分离：内旋效应

The Dissociation of Egocentric and Allocentric Mental Rotation through an In-Rotation Effect

采用虚拟的旋转不同角度左、右手模型，构建“左右手判断(Left and right hand judgment: LR)”任务和“相同－不同判断(same and different judgment: SD)”任务，考察这两种实验任务是否都存在内旋效应和角度效应，以此推论被试采用何种旋转策略。结果发现：（1）两种实验任务结果均表现出显著的角度效应。（2）在LR任务条件下，存在显著的内旋效应，而在SD任务中不存在内旋效应。从而表明当人手图片作为心理旋转材料时，它具有双重角色。被试心理旋转加工时究竟选用何种参照系的旋转策略，与实验材料和实验任务两者都密不可分。

Mental rotation involves the spatial transformation of the mental image of a physical stimulus. The following two mental rotation tasks have been employed in the literature: (1) left–right or normal-mirror judgment task and (2) the same–different judgment task. The time taken in making these judgments as well as the errors made often increase with the angular difference in orientation between the stimuli， or the difference between imagined and normalized orientation.Further， mental rotation can