IIMPACT in Health, Allied Health and Human Performance Unit, The University of South Australia, G.P.O. Box 2471, Adelaide, SA, 5001, Australia.
Department of Psychology, University of Bath, Bath, BA2 7AY, England, UK.
Psychol Res. 2021 Nov;85(8):2829-2881. doi: 10.1007/s00426-020-01444-8. Epub 2021 Jan 3.
Body-specific mental rotation is thought to rely upon internal representations of motor actions. Handedness is a source of distinctly different motor experience that shapes the development of such internal representations. Yet, the influence of handedness upon hand mental rotation has never been systematically evaluated. Five databases were searched for studies evaluating hand left/right judgement tasks in adults. Two independent reviewers performed screening, data extraction, and critical appraisal. Eighty-seven datasets were included, with 72 datasets pooled; all had unclear/high risk of bias. Meta-analyses showed that right-handers were faster, but not more accurate, than left-handers at hand mental rotation. A unique effect of handedness was found on performance facilitation for images corresponding to the dominant hand. Meta-analyses showed that right-handers were quicker at identifying images of right hands than left hands-a dominance advantage not evident in left-handers. Differing hand representations (more lateralised hand dominance in right-handers) likely underpin these findings. Given potential differences between hand preference and motor performance, future research exploring their distinct contributions to mental rotation is warranted.
身体特定的心理旋转被认为依赖于运动动作的内部表示。惯用手是明显不同的运动经验的来源，这种经验影响了内部表示的发展。然而，惯用手对手心理旋转的影响从未被系统地评估过。五个数据库被用来搜索评估成年人左手/右手判断任务的研究。两名独立的审查员进行了筛选、数据提取和关键评估。共纳入了 87 个数据集，其中 72 个数据集被汇总；所有数据集都存在不清楚/高偏倚风险。荟萃分析表明，右利手比左利手在手心理旋转任务中更快，但准确性没有提高。研究发现，惯用手在手心理旋转中存在独特的促进作用，即对与优势手相对应的图像的促进作用。荟萃分析表明，右利手识别右手图像的速度快于左手图像——这一优势在左利手中并不明显。不同的手部表现（右利手的手部优势更为侧化）可能是这些发现的基础。鉴于手偏好和运动表现之间可能存在差异，未来有必要研究它们对手心理旋转的不同贡献。
