Miller L L, Whitsett J M, Vandenbergh J G, Colby D R
J Comp Physiol Psychol. 1977 Apr;91(2):245-59. doi: 10.1037/h0077315.
Male golden hamsters (Mesocricetus auratus) were examined from 3 to 9 wk of age for morphological, physiological, and behavioral indices of sexual maturation. Although each of the eight variables selected for measurement displayed a unique developmental profile, a principal-components analysis of these variables resulted in the extraction of two principal components, one tentatively labeled physical and gross behavioral maturation (accounting for 66% of the total variance) and the other designated perfection of mounting orientation (accounting for an additional 12% of the variance). This result indicates that puberty in the male hamster is best viewed as two independent processes, rather than as a unitary process, or as an arbitrary term applied to a variety of unrelated developmental phenomena. Advantages of using multi-variate composite scores and selected univariate measurements are discussed; as are methods of comparing developmental changes in different variables. A second experiment confirmed an unexpectedly early onset of androgen secretion and an unusual pattern of body weight gain.
对3至9周龄的雄性金黄地鼠（Mesocricetus auratus）进行检查，以获取性成熟的形态学、生理学和行为学指标。尽管所选择测量的八个变量中的每一个都呈现出独特的发育特征，但对这些变量进行主成分分析后，提取出了两个主成分，一个暂定为身体和总体行为成熟（占总方差的66%），另一个为爬跨姿势完善（占额外的12%方差）。这一结果表明，雄性仓鼠的青春期最好被视为两个独立的过程，而不是一个单一的过程，或者是一个应用于各种不相关发育现象的随意术语。文中讨论了使用多变量综合评分和选定单变量测量的优点，以及比较不同变量发育变化的方法。第二个实验证实了雄激素分泌意外提前开始以及体重增加的异常模式。
