CORTISOL AND BEHAVIOR .2. APPLICATION OF A LATENT STATE-TRAIT MODEL TO SALIVARY CORTISOL
CORTISOL AND BEHAVIOR .2. APPLICATION OF A LATENT STATE-TRAIT MODEL TO SALIVARY CORTISOL
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DOI：
10.1016/0306-4530(90)90080-s
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发表时间：
1990-01-01
影响因子：
3.7
通讯作者：
HELLHAMMER, DH
中科院分区：
文献类型：
--
作者：
KIRSCHBAUM, C;STEYER, R;HELLHAMMER, DH
在两项研究中，我们应用了一种新的随机模型来测量健康受试者唾液皮质醇的潜伏期和特征。数据采用线性结构关系(LISREL)进行分析。在第一项研究中，48名学生在1300时分两次采集了唾液样本，两次采集的间隔为六周。唾液皮质醇水平主要受情境和/或交互作用的影响，这决定了荷尔蒙数据总方差的大约75%，而只有大约21%是由潜在特征决定的。在第二项研究中，54名年轻母亲在连续三天的0800小时、1500小时和2000小时收集唾液，从健康婴儿出生后的第二天开始收集。清晨唾液皮质醇在三天中表现出高度的一致性。在清晨的皮质醇样本中，大约60%的总变异是由潜伏性决定的。然而，对于1500h和2000h样品，相应的变异比例分别只有33%和28%。这些结果似乎反映了一些妇女在分娩后第二天缺乏明确的昼夜节律。
In two studies we applied a new stochastic model for the measurement of latent states and traits to salivary cortisol in healthy subjects. Data were analyzed by Linear Structural Relations (LISREL). In the first study, 48 students collected saliva samples on two occasions at 1300h with an interval of six weeks between occasions. Salivary cortisol levels were found to be mainly influenced by situational and/or interactional effects, which determined approximately 75% of the total variance of the hormone data, while only approximately 21% were determined by the latent trait. Measurement unreliability was found to be approximately 4%.In the second study, 54 young mothers collected saliva at 0800h, 1500h, and 2000h for three consecutive days, starting ont he second day after delivery of a healthy baby. Early morning salivary cortisol showed high consistency across the three days. Approximately 60% of the total variance in the early morning cortisol samples was determined by the latent trait. For the 1500h and 2000h samples, however, the corresponding proportions of variances amounted only to 33% and 28%, respectively. These results appear to reflect the absence of a clear-cut circadian rhythm in some of the women on the second day after delivery.