Menstrual synchrony: Fact or artifact?

This paper presents results of a study conducted over five consecutive months in Polish student dormitories

Anna Ziomkiewicz

2007

Scholarcy highlights

  • More than thirty years of intensive investigation have passed since McClintock first published results on menstrual synchrony, there is still no conclusive evidence for the existence of this phenomenon
  • A growing body of nullresult studies, critiques of menstrual synchrony studies, and the lack of convincing evolutionary explanations bring into question the existence of this phenomenon
  • This paper presents results of a study conducted over five consecutive months in Polish student dormitories
  • Social interactions, considered the most important factor mediating the effect of menstrual synchrony, was unrelated to any difference in menstrual cycle onsets
  • These results provide further evidence that women do not synchronize their menstrual cycles

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