Recent research has identified a leftward cradling bias in males, although males are much less lateralised than females. It has been suggested that on an individual level this leftward bias is strengthened as males acquire caregiving experience. Furthermore, recent explanations propose that leftward cradling bias is facilitated by right-hemispheric specialisation for processing facial emotions. Some have suggested that it is specifically facilitated by right-hemispheric specialisation for basic social-affective processes that underlie our capacity to relate to others. The present study investigated male cradling bias in relation to these three factors. Ninety-eight right-handed males aged 18–56 years were observed across four separate trials of an imaginary cradling scenario. Caregiving experience, attachment style, hemispheric lateralisation for processing facial emotion, and autistic traits were measured. A leftward cradling bias was observed in 72.4% of participants and was not contingent on caregiving experience. Regression analyses revealed that right-hemispheric lateralisation for processing facial emotions and autistic traits were both significant predictors of leftward cradling, while attachment style did not predict leftward cradling. Overall, our findings indicate that the leftward cradling bias in males is not contingent on previous caregiving experience and provide further support for right-hemispheric specialisation and basic social-affective processing explanations.

尽管男性比女性少得多的偏侧，最近的研究已经确定了男性向左的偏斜。有人建议，随着男性获得照料经验，这种向左偏见会得到加强。此外，最近的解释提出，通过右半球专业化处理面部情绪可以促进向左的偏斜。有些人认为，通过右半球专门化对基本的社会情感过程特别有利，这是我们与他人建立联系的能力的基础。本研究调查了与这三个因素有关的雄性偏育。在一个假想的假想情景的四项独立试验中，观察到十九名年龄在18-56岁之间的右撇子男性。护理经验，依恋风格，半球偏侧化处理面部情绪，并测量自闭症特征。在72.4％的参与者中观察到了向左的拥抱偏差，这并不取决于护理经验。回归分析显示，用于处理面部情绪和自闭症特征的右半球偏侧化都是左手抱抱的重要预测指标，而依恋风格不能预测左手抱抱。总体而言，我们的研究结果表明，男性的左后背偏倚并不取决于以前的护理经验，并为右半球专业化和基本的社会情感处理解释提供了进一步的支持。回归分析显示，用于处理面部情绪和自闭症特征的右半球偏侧化都是左手抱抱的重要预测指标，而依恋风格不能预测左手抱抱。总体而言，我们的研究结果表明，男性的左后背偏倚并不取决于以前的护理经验，并为右半球专业化和基本的社会情感处理解释提供了进一步的支持。回归分析显示，用于处理面部情绪和自闭症特征的右半球偏侧化都是左手抱抱的重要预测指标，而依恋风格不能预测左手抱抱。总体而言，我们的研究结果表明，男性的左后背偏倚并不取决于以前的护理经验，并为右半球专业化和基本的社会情感处理解释提供了进一步的支持。