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Do women’s voices really allow men to detect ovulation?

Scientists at the German Primate Center are challenging a current doctrine

The voice can reveal a lot about a person - their gender, their age, how they are feeling - and recent studies have even suggested that women’s voices might also contain cues that men can read about how close they are to ovulation. A new study, however, published today in the journal PLoS ONE, challenges the view that women broadcast reproductive information in their voice.

Previous studies in this area have typically relied on the comparison of voices recorded in just two phases in the cycle: high conception risk vs. low conception risk. This new work, on the other hand, looked at variation in the voice throughout the entire menstrual cycle – a crucial step to evaluate the potential information contained in any observed voice changes.

The results showed that the overall variation in women’s vocal quality throughout the whole cycle precludes unequivocal identification of the period with the highest conception risk. Specifically, while they found that the women studied spoke with the highest tone (suggested by previous studies to be associated with attractiveness) just prior to ovulation, the tone rose again to levels indistinguishable from pre-ovulation shortly after ovulation, making it a very poor mating clue. Furthermore, they found that the men studied showed only a very slight preference for pre-ovulation voices relative to voices recorded during ovulation.

The authors conclude that women’s voices do not provide reliable information about the timing of ovulation, confirming the view that information about reproductive state is ‘leaked’ rather than broadcast. In an interesting further finding, the study found that women’s voice were harsher and more irregular during menstruation, providing scientific data to explain why female opera singers may be granted ‘grace days’ during menstruation.

The international collaborative study was led by Prof Julia Fischer (German Primate Centre), Dr Stuart Semple (Roehampton University, London) and Dr Ofer Amir (Tel-Aviv University).

Original Publication
Fischer, J, Semple, S, Fickenscher, G, Jürgens, R, Kruse, E, Heistermann, M and Amir, O (2011) Do women’s voices provide cues of the likelihood of ovulation? The importance of sampling regime. PLoS One
Prof. Dr. Julia Fischer
Phone: +49 551 3851-375
Dr. Susanne Diederich (DPZ Press Office)
Phone: +49 551 3851-359
The German Primate Center (DPZ) / Leibniz Institute for Primate Research in Göttingen ( conducts basic research on and with primates in the areas of organismic biology, infection research and neurosciences. In addition, it maintains four field sites abroad and is competence and reference center for all issues relating to research on and with primates. The DPZ is one of the 87 research and infrastructure institutes within the Leibniz Community (

Dr. Susanne Diederich | idw
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