Box Shape Influences the Size-Weight Illusion During Individual and Team Lifting
Box Shape Influences the Size-Weight Illusion During Individual and Team Lifting
复制标题
盒子形状影响个人和团队举重过程中的尺寸重量错觉
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
E. Amazeen
中科院分区：
文献类型：
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作者：
E. Amazeen
目的：评价个体和团队举重过程中箱体形状（特别是箱体宽度和高度）对重量感知的影响。背景：大物体被认为比相同质量的小物体轻50%。当举起又大又重的箱子时，这种尺寸重量错觉会带来明显的风险。最近的研究表明，形状会影响这种错觉。具体来说，长度和宽度的增加并不会产生相同的感觉重量的减少。然而，这种影响只在个人举重中被记录下来，主要是小物体。方法：个人和团队举起大箱子，并报告他们对重量的感觉。箱子的质量、高度和宽度是独立变化的，以确定它们对感知重量的独特影响。结果：对于两种类型的提升，增加宽度比增加高度（个人提升15±7%，团队提升18±8%）对感知重量产生更大的平均错觉下降（以95%置信区间的百分比表示）（个人提升24±7%，团队提升41±8%）。结论：尺寸和形状是个体和团队举重过程中感知箱子重量的重要因素。应用：为了避免误解重量和受伤的风险，举重者在接近较大（尤其是较宽）的箱子时应该小心。
Objective: The effects of box shape—specifically width and height—on the perception of heaviness were evaluated during individual and team lifting. Background: Large objects are perceived to be as much as 50% lighter than smaller objects with the same mass. This size-weight illusion presents an obvious risk when lifting large and heavy boxes. Recent research has shown that shape influences this illusion. Specifically, increases in length and width do not produce identical decreases in perceived heaviness. However, this effect has been documented only in individual lifting, mostly with small objects. Method: Individuals and teams lifted large boxes and reported their perceptions of heaviness. The mass, height, and width of the boxes were varied independently to determine their unique effects on perceived heaviness. Results: For both types of lift, increasing width produced a greater mean illusory drop (expressed as a percentage decrease with 95% confidence intervals) in perceived heaviness (24 ± 7% during individual lifting and 41 ± 8% during team lifting) than increasing height (15 ± 7% during individual lifting and 18 ± 8% during team lifting). Conclusion: Size and shape are important factors in perceiving the heaviness of boxes during both individual and team lifting. Application: To avoid misperceiving weight and risking injury, lifters should be careful when approaching larger (especially wider) boxes.