Tan U
Atatürk University, Medical Faculty, Institute of Physiology, Erzurum, Turkey.
Int J Neurosci. 1990 Oct;54(3-4):283-90. doi: 10.3109/00207459008986645.
The relationship between serum testosterone level and nonverbal intelligence was studied in right-handed young adults with regard to handedness. Hand preference was assessed by the Edinburgh Handedness Inventory. Hand skill was measured by a peg moving task. Serum testosterone level was determined using tritium-marked-radioimmunoassay. Visual-spatial performance (nonverbal intelligence) was measured by Cattell's Culture Fair Intelligence Test. In men with consistent right-hand preference (GSs: 80 to 100), IQ was found to be positively linearly related to serum testosterone, which exhibited two regression lines belonging to low and high difference in skill between hands. In females with consistent right-handedness, there was a negative linear correlation between IQ and serum testosterone, which also exhibited two different regression lines according to difference in skill between hands. In males with moderate right-hand preference (GSs 50 to 75), IQ was found to be positively linearly related to serum testosterone, exhibiting two different (same slopes) regression lines according to difference in skill between hands. In females with moderate right-hand preference, IQ first increased and then decreased with serum testosterone, exhibiting a quadratic relationship. These results suggested that serum testosterone in young adults may be associated with visual-spatial performance depending upon sex, hand preference, and hand skill.
针对右利手的年轻成年人，研究了血清睾酮水平与非语言智力之间的关系，并考虑了利手情况。使用爱丁堡利手量表评估手偏好。通过移 peg 任务测量手部技能。使用氚标记放射免疫分析法测定血清睾酮水平。通过卡特尔文化公平智力测验测量视觉空间能力（非语言智力）。在右手偏好一致（GSs：80 至 100）的男性中，发现智商与血清睾酮呈正线性相关，根据双手技能差异呈现出两条回归线，分别属于技能差异低和高的情况。在右手习惯一致的女性中，智商与血清睾酮呈负线性相关，同样根据双手技能差异呈现出两条不同的回归线。在右手偏好中等（GSs 50 至 75）的男性中，发现智商与血清睾酮呈正线性相关，根据双手技能差异呈现出两条不同（斜率相同）的回归线。在右手偏好中等的女性中，智商随血清睾酮先升高后降低，呈现出二次关系。这些结果表明，年轻成年人的血清睾酮可能根据性别、手偏好和手部技能与视觉空间能力相关。
