Original Research Article
Prenatal hormones in first-time expectant parents: Longitudinal changes and within-couple correlations
Version of Record online: 15 DEC 2014
© 2014 Wiley Periodicals, Inc.
American Journal of Human Biology
Volume 27, Issue 3, pages 317–325, May/June 2015
How to Cite
Edelstein, R. S., Wardecker, B. M., Chopik, W. J., Moors, A. C., Shipman, E. L. and Lin, N. J. (2015), Prenatal hormones in first-time expectant parents: Longitudinal changes and within-couple correlations. Am. J. Hum. Biol., 27: 317–325. doi: 10.1002/ajhb.22670
- Issue online: 18 APR 2015
- Version of Record online: 15 DEC 2014
- Manuscript Accepted: 15 NOV 2014
- Manuscript Revised: 8 NOV 2014
- Manuscript Received: 29 JUN 2014
- Institute for Research on Women and Gender at the University of Michigan and the Society for the Psychological Study of Social Issues; Graduate Research Fellowship from the National Science Foundation
Expectant mothers experience marked hormone changes throughout the transition to parenthood. Although similar neuroendocrine pathways are thought to support maternal and paternal behavior, much less is known about prenatal hormone changes in expectant fathers, especially in humans.
We examined longitudinal changes in salivary testosterone, cortisol, estradiol, and progesterone in 29 first-time expectant couples (N = 58). Couples were assessed up to four times throughout the prenatal period, at approximately weeks 12, 20, 28, and 36 of pregnancy. We also examined within-couple correlations in hormones. Data were analyzed using dyadic growth curve modeling.
As expected, women showed large prenatal increases in all four hormones. Men showed significant prenatal declines in testosterone and estradiol, but there were no detectable changes in men's cortisol or progesterone. Average levels of cortisol and progesterone were significantly positively correlated within couples.
The current study represents one of the most extensive investigations to date of prenatal hormones in expectant couples. It is also the first study to demonstrate prenatal testosterone changes in expectant fathers and within-couple correlations in progesterone. We discuss implications of these findings for parental behavior and adjustment. Am. J. Hum. Biol. 27:317–325, 2015. © 2014 Wiley Periodicals, Inc.