Goldsmiths, University of London, London, UK.
Psychon Bull Rev. 2012 Dec;19(6):1122-7. doi: 10.3758/s13423-012-0299-6.
The extent to which an irrelevant distractor is processed during selective attention depends critically on the level of perceptual load on the relevant task. Here we show that perceptual load also affects the tendency of graspable objects to afford associated actions. Participants carried out a letter-search task and identified a target letter with the right or left hand while ignoring a graspable object with a handle oriented on the left or the right side of the object. The target letter was presented either on its own (low perceptual load) or alongside five nontarget letters (high load). Responses were faster when the action afforded by the ignored object was compatible (vs. incompatible) with the current target response, but only when the perceptual load of the letter search task was low. This finding is the first to demonstrate the role of perceptual load in action affordances by ignored objects.
在选择性注意中，无关分心物的处理程度取决于相关任务的知觉负载水平。在这里，我们表明知觉负载也会影响可抓握物体产生相关动作的趋势。参与者执行字母搜索任务，用右手或左手识别目标字母，同时忽略手柄位于物体左侧或右侧的可抓握物体。目标字母要么单独呈现（低知觉负载），要么与五个非目标字母一起呈现（高负载）。当忽略物体提供的动作与当前目标响应兼容（与不兼容）时，响应更快，但只有在字母搜索任务的知觉负载较低时才会出现这种情况。这一发现首次证明了知觉负载在被忽略物体的动作提供中的作用。
