Ovulatory shift hypothesis

The ovulatory shift hypothesis asserts that human women experience evolutionarily adaptive changes in subconscious thoughts and behaviors related to mating during different parts of the ovulatory cycle. It suggests that what women want, in terms of men, changes throughout the menstrual cycle. Two meta-analyses published in 2014 reached opposing conclusions on whether the existing evidence was robust enough to support the prediction that women's mate preferences change across the cycle. Questions have been raised about the validity of the supporting meta-analysis and some of its findings have been retracted. A newer 2018 review does not show women changing the type of men they desire at different times in their fertility cycle. This null finding is supported by a wide range of methodologically rigorous, well-powered experiments.

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