Nachshon I, Denno D
Cortex. 1986 Dec;22(4):567-78. doi: 10.1016/s0010-9452(86)80016-8.
Associations between birth order and lateral preferences of hand, eye and foot were examined in a sample of 6436 black seven year old boys and girls whose mothers participated in the Collaborative Perinatal Project (CPP) in Philadelphia. Overall, most of the subjects (87%) showed right hand preference, and the majority of subjects showed right eye (55%) and foot (63%) preferences. Analysis of cross preferences indicated some tendency for a consistent right side orientation. However, patterns of lateral preferences were similar for both boys and girls across seven birth order groups. The data were interpreted as showing that birth order and lateral preferences are not interrelated.
在费城参与围产期协作项目（CPP）的6436名7岁黑人男孩和女孩样本中，研究了出生顺序与手、眼和脚的偏侧性偏好之间的关联。总体而言，大多数受试者（87%）表现出右手偏好，大多数受试者表现出右眼（55%）和右脚（63%）偏好。交叉偏好分析表明，存在某种一致偏向右侧的倾向。然而，在七个出生顺序组中，男孩和女孩的偏侧性偏好模式相似。这些数据被解释为表明出生顺序和偏侧性偏好并无关联。
