在一些动物中，侧化只是对单爪或单脚的偏好，而在另一些动物中，则表现为更普遍的行为模式。
In some animals, lateralisation is simply a preference for a single paw or foot, while in others it appears in more general patterns of behaviour.
2009年，澳大利亚麦考瑞大学的玛丽亚·玛加特和库鲁姆·布朗想要了解在侧化方面是否存在普遍的认知优势。
In 2009, Maria Magat and Culum Brown at Macquarie University in Australia wanted to see if there was general cognitive advantage in lateralisation.
与此同时，弱侧化的幼雏很难同时进行这两种活动。
The weakly-lateralised chicks, meanwhile, had difficulty performing these two activities simultaneously.
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