It’s been repeatedly shown that pictures of graspable objects can facilitate visual processing, even in the absence of reach-to-grasp actions, an effect often attributed to the concept of affordances. A classic demonstration of this is the handle compatibility effect, characterised by faster reaction times when the orientation of a graspable object’s handle is compatible with the hand used to respond, even when the handle orientation is task-irrelevant. Nevertheless, it is debated whether the speeded reaction times are a result of affordances or spatial compatibility. First, we investigated whether we could replicate the handle compatibility effect while controlling for spatial compatibility. Participants ( N = 68) responded with left or right-handed keypresses to whether the object was upright or inverted and, in separate blocks, whether the object was red or green. We failed to replicate the handle compatibility effect, with no significant difference between compatible and incompatible conditions, in both tasks. Second, we investigated whether there is a lower visual field (VF) advantage for the handle compatibility effect in line with what has been found for hand actions. A further 68 participants responded to object orientation presented either in the upper or lower VF. A significant handle compatibility effect was observed in the lower VF, but not the upper VF. This suggests that there is a lower VF advantage for affordances, possibly as the lower VF is where our actions most frequently occur. However, future studies should explore the impact of eye movements on the handle compatibility effect and tool affordances.

中文翻译：

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物体可供性是否存在较低的视野优势？注册报告

事实已经反复证明，即使在没有伸手去抓动作的情况下，可抓握物体的图片也可以促进视觉处理，这种效果通常归因于可供性的概念。一个经典的演示是手柄兼容性效应，其特点是当可抓握物体的手柄的方向与用于响应的手兼容时，即使手柄方向与任务无关，反应时间也会更快。然而，反应时间加快是否是功能可供性或空间兼容性的结果仍存在争议。首先，我们研究了是否可以在控制空间兼容性的同时复制手柄兼容性效果。参与者（N = 68）用左手或右手按键来响应物体是直立还是倒置，以及在单独的块中物体是红色还是绿色。我们未能复制句柄兼容性效果，在这两项任务中，兼容和不兼容条件之间没有显着差异。其次，我们研究了手柄兼容性效果是否具有较低视野（VF）优势，这与手部动作的发现一致。另外 68 名参与者对上部或下部视场中呈现的物体方向做出了反应。在较低的 VF 中观察到显着的手柄兼容性效应，但在较高的 VF 中没有观察到。这表明对于可供性而言，VF 优势较低，可能是因为较低的 VF 是我们的行为最常发生的地方。然而，未来的研究应该探讨眼球运动对手柄兼容性效果和工具可供性的影响。