Objectives

We explored associations between the needs for power, achievement, and affiliation and functional cerebral asymmetries (FCAs), guided by three established hypotheses about the nature of these associations.

Methods

One-hundred-and-seven participants completed picture-story measures of dispositional motives and activity inhibition (AI), a frequent moderator of motive-behavior associations, tasks measuring FCAs (line bisection, chimeric emotional face judgments, turning bias, perceptual and response asymmetries on the Poffenberger task), self-reported laterality preferences (handedness, footedness, ear and eye preference), and interhemispheric interaction (crossed-uncrossed difference). They also completed an experiment manipulating hand contractions (left, right, both, neither) while they worked on a second picture-story motive measure.

Results

Dispositional power motivation was associated with stronger rightward asymmetry and less interhemispheric transfer in high-AI and stronger leftward asymmetry and more interhemispheric transfer in low-AI individuals. For the affiliation motive, findings were fewer and in the opposite direction of those for the power motive. These findings emerged for men, but not for women. Left- or right-hand contractions led to increases in power and achievement motivation, but not affiliation motivation. Only left-hand contractions led to decreased AI.

Conclusions

We discuss these findings in the context of sex-dimorphic organizing and activating effects of steroids on motives and laterality.

中文翻译：

---

动机与横向：探索联系

目标

我们探讨了对力量，成就，隶属关系和功能性脑不对称（FCA）的需求之间的关联，这些关联涉及三个关于这些关联的性质的既定假设。

方法

一百零七名参与者完成了关于故事动机和活动抑制（AI）的图片故事测量，动机行为协会的频繁主持人，测量FCA的任务（线条平分，嵌合情绪面孔判断，转向偏见，知觉和反应） Poffenberger任务的不对称性，自我报告的侧向性偏爱（惯性，脚踩，耳朵和眼睛偏爱）和半球之间的交互作用（交叉不交叉差）。他们还完成了一项实验，以操纵手部收缩（左，右，两者均不动），同时研究了第二个图片故事动机。

结果

在高AI的人中，性向动力动机与更强的向右不对称性和较少的半球间转移以及在低AI的个体中更强的向左性不对称和更大的半球间转移相关。对于隶属动机而言，发现较少，并且与动力动机相反。这些发现是针对男性的，而不是针对女性的。左手或右手收缩会导致力量和成就动机的增加，而不是从属动机的增加。只有左手收缩导致AI降低。

结论

我们将在类固醇对动机和偏侧性的性别-双态组织和激活作用的背景下讨论这些发现。