神经科学与心理学2021sciencedirect.com
能装下就坐下：家猫对错觉轮廓的易感性
If I fits I sits: illusory contour susceptibility in domestic cats
入门 · 约 30 分钟读完前置知识：动物行为学基础、视知觉/视错觉概念
导读
这篇论文研究家猫是否会像被真实轮廓吸引一样，被 Kanizsa 视错觉（主观轮廓）吸引而“坐进去”。研究借助疫情期间的公民科学项目，让 500 多名猫主人打印并摆放刺激图形，最终 30 只完成全部六天试验，其中 9 只猫至少有一次四肢进入轮廓内停留 3 秒以上；结果显示猫选择 Kanizsa 错觉图形的频率与真实方形相当、高于对照，提示猫可能像处理真实轮廓一样处理主观轮廓。
HN 关注点：HN 读者被“猫爱坐盒子”这一可爱现象背后的视错觉感知机制吸引，同时讨论焦点集中在公民科学方法学上——94% 的参与者流失使样本极小，结论可靠性存疑。
HN 评论精选
这几条评论里：质疑 1 补充 3
质疑质疑样本流失严重、有效数据极少，结论亟需受控实验验证
94% 的参与者没有完成全部试验，只剩 30 人，其中仅 9 只猫被发现至少有一次四肢进入轮廓内停留至少 3 秒。所以说这项研究需要在受控环境中重复，绝不是客套话。为什么公民科学家会放弃一个关于自家猫的研究？大概是无聊吧——因为他们的猫什么都不做。
rebuilder查看英文原文
94% of the participants did not complete all the assigned trials. That left 30 participants Who did, and among those, 9 cats were found to select " at least one stimulus by sitting within the contours (illusory or otherwise) with all limbs for at least three seconds." So when they're saying this should be repeated in a controlled setting, they're not kidding. Why does a citizens scientist decide to not complete a study involving their cat? How about boredom, because their cat doesn't do anything?
补充补充论文摘要，说明研究方法与核心发现
（因页面 JS 无法渲染，贴出摘要）猫主人熟知猫爱坐在盒子、洗衣篮甚至地上贴出的形状轮廓里。本研究利用猫对盒状空间的偏好，检验其对 Kanizsa 方形视错觉的感知。研究在新冠疫情期间开展，随机分配公民科学参与者打印六套随机、平衡的每日刺激图形并成对放在地上，主人观察并录像记录猫的行为。研究覆盖 500 多只猫，其中 30 只完成了全部试验，9 只猫至少有一次四肢进入轮廓内停留至少 3 秒。结果显示猫选择 Kanizsa 错觉的频率与真实方形相当、高于对照，表明家猫可能像对待真实轮廓一样对待主观轮廓。
guenthert查看英文原文
Obfuscated Javascript didn't render here (Chromebook), found what looked like the abstract: "A well-known phenomenon to cat owners is the tendency of their cats to sit in enclosed spaces such as boxes, laundry baskets, and even shape outlines taped on the floor. This investigative study asks whether domestic cats (<em>Felis silvestris catus</em>) are also susceptible to sitting in enclosures that are illusory in nature, utilizing cats’ attraction to box-like spaces to assess their perception of the Kanizsa square visual illusion. Carried out during the COVID-19 pandemic, this study randomly assigned citizen science participants Booklets of six randomized, counterbalanced daily stimuli to print out, prepare, and place on the floor in pairs. Owners observed and videorecorded their cats’ behavior with the stimuli and reported findings from home over the course of the six daily trials. This study ultimately reached over 500 pet cats and cat owners, and of those, 30 completed all of the study’s trials. Of these, nine cat subjects selected at least one stimulus by sitting within the contours (illusory or otherwise) with all limbs for at least three seconds. This study revealed that cats selected the Kanizsa illusion just as often as the square and more often than the control, indicating that domestic cats may treat the subjective Kanizsa contours as they do real contours. Given the drawbacks of citizen science projects such as participant attrition, future research would benefit from replicating this study in controlled settings. To the best of our knowledge, this investigation is the first of its kind in three regards: a citizen science study of cat cognition; a formal examination into cats’ attraction to 2D rather than 3D enclosures; and study into cats’ susceptibility to illusory contours in an ecologically relevant paradigm. This study demonstrates the potential of more ecologically valid study of pet cats, and more broadly provides an interesting new perspective into cat visual perception research." Thought that might be of interest to other who, like me, couldn't grok the headline.
补充补充 Kanizsa 错觉的背景资料
很遗憾看不到论文插图，里面应该有几张猫坐在东西里的照片。他们提到的 Kanizsa 方形错觉应该是这个（附链接）。
agency查看英文原文
I'm very sad I can't view the figures, which appear to include at least a couple of shots of cats sitting in things. It looks like the Kanizsa square illusion they're referring to is this: https://puzzlewocky.com/optical-illusions/kanizsa-square-and-triangle-illusions/
补充趣谈大型猫科动物与家猫行为相似，同样爱坐盒子
大型猫科动物和家猫没什么区别，行为一模一样，包括坐进盒子里。唯一的区别是大型猫科动物莫名恼火时会直接杀死你，而不只是抓伤你的手臂——这似乎只是体型差异，而非行为差异。
SigmundA查看英文原文
It always amuses me that large cats are no different than house cats, they seem to act exactly the same including sitting in boxes [1]. Only difference is when the large cat gets annoyed for unknown reasons it kills you rather than just scratching your arm up and that’s just due to a difference in size not behavior it seems. 1. https://www.pinterest.com/pin/404268504021009708/
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