Adolescent impulsivity predicts adult dominance attainment in male
Adolescent impulsivity predicts adult dominance attainment in male
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DOI：
10.1002/ajp.20057
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发表时间：
2004-09-01
影响因子：
2.4
通讯作者：
Mann, JJ
中科院分区：
文献类型：
--
作者：
Fairbanks, LA;Jorgensen, MJ;Mann, JJ
青春期的特点是行为和生理上的变化，为个人向成年的过渡做准备。本研究的目的是评估青春期雄性长尾鼠的行为、形态、神经生物学和发育特征在预测后期优势获得中的作用。对36只青春期雄性长尾鼠进行了社会冲动性测试，当时它们还生活在自己的出生群体中。体重和脑脊液（CSF）的血清素、多巴胺和去甲肾上腺素的代谢物在5岁时被引入新的母系繁殖组。在引入后6岁时测定稳定的成虫优势等级。结果表明，体重、青少年冲动、C - F中5-羟基吲哚乙酸（5-HIAA）和同型香草酸（HVA）水平预测成年优势获得。正如预期的那样，在引入之前体重高于平均水平的雄性更有可能成为统治者。青少年时期冲动性高，引进前5-HIAA较低的雄性更有可能在引进一年后达到稳定的雄性领袖地位。这三个因素的组合导致92%（33/36）的男性正确预测等级成就。在这个样本中，另外两个因素——母体支配等级和入侵者挑战测试中的社会焦虑测量——与成人支配成就无关。这些结果支持这样一种观点，即高风险、高收益的策略对青春期和年轻成年雄性马尾鼠是有益的。他们还表明，青少年的冲动是有年龄限制的。地位高的男性成年后行为会有所缓和，冲动的得分也不再比同龄男性高。
Adolescence is characterized by behavioral and physiological changes that prepare individuals for the transition to adulthood. The purpose of this study was to evaluate the effects of behavioral, morphological, neurobiological, and developmental characteristics of adolescent male vervets in predicting later dominance attainment. Thirty-six adolescent male vervets were tested for social impulsivity by means of the Intruder Challenge test while they were still living in their natal groups. Body weight and cerebrospinal fluid (CSF) metabolites of serotonin, dopamine, and norepinephrine were measured before they were introduced into new matrilineal breeding groups at age 5. Stable adult dominance rank was determined at age 6, 1 year following introduction. The results indicated that body weight, adolescent impulsivity, and levels of 5-hydroxyindoleacetic acid (5-HIAA) and homovanillic acid (HVA) in C F predicted adult dominance attainment. As expected, males that were above average in body weight prior to introduction were significantly more likely to become dominant. Males that were high in impulsivity as adolescents, and low in 5-HIAA prior to introduction were more likely to achieve stable alpha male status 1 year following introduction. The combination of these three factors resulted in correct prediction of rank attainment for 92% (33/36) of the males. Two other factors-maternal dominance rank and a measure of social anxiety from the Intruder Challenge test-were not related to adult dominance attainment in this sample. These results support the idea that there are benefits of a high-risk, high-gain strategy is beneficial for adolescent and young adult male vervets. They also demonstrate that adolescent impulsivity is age-limited. Males that achieved high rank moderated their behavior as adults, and no longer scored high in impulsivity relative to their age peers.