左利手及其形成机制:生理、病理及心理学的视角

On Left Handedness and its Mechanisms:From Physiological,Pathological,Psychological View

与右利手相比,左利手在人口中占少数,并且具有明显的性别差异,男性比女性多。左利手有时会表现出认知缺陷,同时在某些领域也具有优势。左利手形成机制比较复杂,既有遗传影响,也有生理、病理方面的原因,可能的因素包括早期脑损伤,各种出生风险因素,以及孕期激素水平等,还具有深刻的心理、社会根源。

Relative to right handedness,left handedness were minority,moreover,they showed sex difference,male left handedness were slight more than female left handedness.Some left handedness showed some cognitive deficiency,and some had advantage in special domains.Several factors contribute to left handedness.One is genetic,and also included pathological and physiological factors,for example early brain injury,pregnancy and birth risk factors and prenatal androgen levels,as well as psychological and sociological factors.