Menstrual Synchrony and Suppression

  title={Menstrual Synchrony and Suppression},
  author={Martha K. McClintock},
Synchrony and suppression among a group of women living together in a college dormitory suggest that social interaction can have a strong effect on the menstrual cycle. 
Menstrual synchrony in female couples
The menstrual cycles of cohabitating women have been found to synchronize, possibly through social and pheromonal mechanisms. The extent of this phenomenon, menstrual synchrony, was examined in 20
Menstrual synchrony between mothers and daughters and between roommates
Mothers and daughters living in the same domicile displayed a significant degree of synchrony, and roommates in private residences were also synchronous, although not significantly more than roommates residing in dormitories.
Menstrual synchrony
More research is needed before the precise mechanisms that regulate menstrual synchrony are elucidated and there is some evidence that olfactory cues between females might underlie the effect.
Examination of menstrual synchrony among women basketball players
Menstrual synchrony was not found among the teams nor among best friends, and no meaningful relation was found between synchrony and menstrual-related or social-interaction variables.
Women do not synchronize their menstrual cycles
It is shown that cycle variability produces convergences and subsequent divergences of cycle onsets and may explain perceptions of synchrony.
No evidence for menstrual synchrony in lesbian couples
There is no solid evidence that menstrual synchrony is a stable attribute of past or contemporary human populations, and there was no evidence of convergence between dyads in menses onset dates.
Human menstrual synchrony: A critical assessment
This review on menstrual synchrony in human females has four purposes: (a) to determine whether or not the phenomenon exists, and whether it differs in the various groups studied: roommates in
Cycling Together: Menstrual Synchrony as a Projection of Gendered Solidarity
Though researchers have hotly debated the phenomenon of menstrual synchrony—women menstruating in tandem when living in close quarters with one another—no conclusive evidence has proven or disproven
The impact of social interaction factors on menstrual synchrony in the workplace
The two objectives of this study were: (1) to examine the impact of social interaction variables (e.g., friendship, time working together, and activity) on the occurrence of menstrual synchrony; (2)
Influence of male social contacts, exercise and all-female living conditions on the menstrual cycle
The findings confirm earlier reports of menstrual synchrony and extend them to an environment consisting of males and females.


The effect of age upon the pattern of the menstrual cycle.
Length of cycle was found to be less constant in the 17 to 19 and 40 to 50 age groups than at other ages and stability and efficiency of ovarian activity are greatest at 24-34 years less at 20-24 and 35-39 years and least at 17-19 and 40-50 years.
Nonparametric Statistics for the Behavioral Sciences.
This is the revision of the classic text in the field, adding two new chapters and thoroughly updating all others. The original structure is retained, and the book continues to serve as a combined
Pregnancy-block in female mice placed in boxes soiled by males.
Newly mated female mice were placed singly for periods of up to 3 days in boxes recently vacated by five males of a different strain and showed pregnancy-block to the same extent as when placed in the proximity of alien males for similar periods.
Estrus-Inducing Pheromone of Male Mice: Transport by Movement of Air
The proportion of female SJL/J mice exhibiting estrus from a group of 15 hybrid mi not significantly less than that of females placed directly under the males posed to their urine, and the pheromone from male mice is volatile further support the concep, acts through olfactory receptors.
Ordered Hypotheses for Multiple Treatments: A Significance Test for Linear Ranks
Abstract In many experiments the background evidence, theories, or conditions suggest an expected ordering among the treatment effects, yet in the analysis of variance such implicit hypotheses are
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