Play behaviour, not tool using, relates to brain mass in a sample of birds.

Play behaviour, not tool using, relates to brain mass in a sample of birds.
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DOI:
10.1038/s41598-020-76572-7
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发表时间:
2020-11-24
期刊:
影响因子:
4.6
通讯作者:
Kaplan G
Kaplan G
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Kaplan G

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鸟类的游戏行为和工具使用行为,这两种被很好地描述和充分研究的行为,通常与认知能力有关。在这项研究中,这些行为与澳大利亚本土鸟类样本的相对脑质量有关。尽管迄今为止在认知和工具使用之间有一些暗示性的研究结果,但这项研究发现,使用工具的鸟类和不使用工具的鸟类之间的相对大脑质量或寿命没有显着差异。相比之下,在游戏行为中,细分为社交玩家和非社交玩家,结果显示社交,非社交和非玩家之间的相对大脑质量在统计上非常明显。社交游戏与最大的大脑质量与身体质量的比率和最长的寿命有关。结果表明,玩耍行为是与大脑扩大相关的关键变量,而不是工具使用。由于到目前为止测试的许多使用工具的物种也玩,这项研究表明,错误的结论可以得出关于工具使用和认知能力之间的联系时,沉默的变量(游戏行为)不考虑在内。
Play behaviour and tool using in birds, two well-delineated and amply researched behaviours, have generally been associated with cognitive abilities. In this study, these behaviours were related to relative brain mass in a sample of Australian native birds. Despite suggestive research results so far between cognition and tool using, this study found no significant difference in relative brain mass or in lifespan between tool-using birds and non-tool users. By contrast, in play behaviour, subdivided into social players and non-social players, the results showed statistically very clear differences in relative brain mass between social, non-social and non-players. Social play was associated with both the largest brain mass to body mass ratios and with the longest lifespans. The results show that play behaviour is a crucial variable associated with brain enlargement, not tool using. Since many of the tool using species tested so far also play, this study suggests that false conclusions can be drawn about the connection between tool using and cognitive ability when the silent variable (play behaviour) is not taken into account.
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