评估横向性,性别和竞争力之间的联系,以验证双手的进化稳定策略
Giulia Prete1, Erika Marascia1, Adolfo Di Crosta2
1Department of Psychology, University of Chieti-Pescara, 31 Via Dei Vestini, 66100, Chieti, Italy.
Scientific reports
|February 17, 2026
概括
左撇子的个体表现出更高的竞争力,支持进化论理论的手性. 这项研究发现左撇子和竞争特征之间存在联系,而这些特征与精细运动技能不同.
科学领域:
- 进化心理学 进化心理学
- 人类行为人类行为.
- 神经科学是一个神经科学.
背景情况:
- 人类使用右手显示出人口水平的不对称性,约90%的人是右手.
- 进化论提出,双手性在合作行为 (右手) 和竞争行为 (左手) 中具有优势.
- 以前的研究表明,非右撇子与特定的行为特征之间存在潜在联系.
研究的目的:
- 为了研究手性和竞争行为之间的关系.
- 测试左撇子在竞争环境中具有优势的假设.
- 区分自我报告的横向率 (LQ) 和手工灵巧度在竞争力中的作用.
主要方法:
- 实验1:在1100多名参与者的在线自我报告问卷评估了手性,竞争性取向和焦虑.
- 实验2:对48名左撇子和右撇子进行板任务,以测量手工灵巧度.
- 统计分析将横向率 (LQ) 和灵巧度与各种竞争力指标和人格特征相关联.
主要成果:
- 较强的左撇子与自我发展的竞争取向正相关,与竞争回避负相关.
- 与右撇子相比,左撇子报告了明显更高的超级竞争性取向.
- 侧面性系数 (LQ) 与竞争力有关,而手工敏捷性 (板任务) 与自我报告的侧面性或竞争力没有相关性.
结论:
- 自我报告的横向性系数 (LQ),而不是手工敏捷性,与提高竞争力特别相关.
- 这些发现支持了对人口水平手性不对称的进化解释,特别是在竞争行为方面.
- 在神经病症,抑郁症,焦虑症和所有竞争力指标中观察到性别差异.
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