In the past 15 to 20 years, evidence of population-level handedness in non-human primates has emerged from a plethora of studies, although considerable inconsistency is also apparent. The study reported here examined two factors that may contribute to the expression of hand preference: early rearing history and sex differences. Handedness was assessed in rhesus monkeys (Macaca mulatta) using a task that measures coordinated bimanual actions and is referred to as the TUBE task. Nursery-reared monkeys demonstrated greater left-hand bias in the TUBE task when compared to their mother-reared counterparts. Females showed greater right-hand preference and stronger bias on the TUBE task compared to males. These results provide evidence that early rearing experiences significantly influence the development of lateralisation in nonhuman primates.

中文翻译：

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早期不良经历对恒河猴（猕猴）行为偏侧化的影响。

在过去的15到20年中，尽管有相当多的矛盾之处，但大量的研究显示了非人类灵长类动物在人口层面上惯用的证据。此处报道的研究检查了可能有助于表达手形偏好的两个因素：早期饲养史和性别差异。在恒河猴（猕猴）中，使用一种测量协调双手行为的任务来评估其手感，该任务被称为TUBE任务。与育母的猴子相比，育苗的猴子在TUBE任务中表现出更大的左手偏见。与男性相比，女性在TUBE任务上表现出更大的右手偏爱和偏见。这些结果提供了证据，证明早期的饲养经历显着影响了非人类灵长类动物侧向化的发展。