Visual Integration Test procedure.

Note. The Visual Integration Test consisted of three conditions: the identification, localization and integration conditions, administered in four sequential blocks. The identification condition (block 1) required visual processing of identity: the target was digit ‘6’ or ‘9’ presented in the center of the screen and subjects were required to press the left or right button on a response box, respectively. The localization condition (block 2 and 3) required visual processing of the location of targets that were presented on the left or right side of the screen. In block 2, the target was ‘6’ and the required response was compatible with the target location. In block 3, the target was '9' and the required response was incompatible with the target location. The integration condition (block 4) required processing of the visual identity as well as location of targets presented on the left or right of the screen, measuring visual integration. The targets were either '6' or '9', and they required compatible and incompatible responses, respectively. In other words, a ‘6’ presented on the right side of the screen required a right button response, whereas a ‘9’ presented on the right side of the screen required a left button response, and vice versa. ISI = inter-stimulus interval.注：视觉整合测验（Visual Integration Test）包含识别、定位与整合三种任务范式，通过四个连续区块施测。识别任务（区块1）要求进行身份视觉加工：屏幕中央呈现目标数字6或9，被试需分别按反应盒的左键或右键做出对应反应。定位任务（区块2与3）要求加工屏幕左右侧呈现目标的位置信息：区块2的目标为数字6，所需反应与目标位置相容；区块3的目标为数字9，所需反应与目标位置不相容。整合任务（区块4）要求同时加工屏幕左右侧呈现目标的视觉身份与位置信息，以此测量视觉整合能力。目标仍为数字6或9，二者分别对应相容与不相容的反应模式：换言之，屏幕右侧呈现的数字6需按右键做出反应，而屏幕右侧呈现的数字9需按左键做出反应，反之亦然。ISI即刺激间间隔（inter-stimulus interval）。