Background: Interpretation of observational studies on associations between prefrontal cognitive functioning and hormone levels across the female menstrual cycle is complicated due to small sample sizes and poor replicability. Methods: This observational multisite study comprised data of n = 88 menstruating women from Hannover. Germany. and Zurich. https://ashleyshomestores.shop/product-category/5-piece-queen-slat-platform-bedroom/