The purpose of this study is to investigate how the menstrual cycle and female sex hormones may impact how well we think and pay attention. We will compare two menstrual cycle phases (i.e., luteal and follicular) and two hormones (i.e., estrogen and progesterone) to see how these may impact females with and without ADHD. We will also be investigating a new tool for measuring health literacy, or the ability to find and critically evaluate health information.