Hormones are molecules that deliver signals throughout the body. They influence behavior, sleep, hunger, stress, and virtually all other aspects of life. This study seeks to better understand several of these functions, specifically how hormones affect specific aspects of human behavior and psychology, as well as speech production. Following an initial lab visit, subjects will participate in the remainder of the study (~5 weeks) at home via the internet. On a daily basis, they will collect urine samples for hormone analysis, saliva samples for analysis of oral micro-organisms, and will submit voice samples for analysis of speech (e.g. measuring voice pitch and loudness). They will then complete an online survey designed to collect information about their behavior, and attitudes over the previous 24 hours. Subjects receive compensation for their participation.

- Pre-sampling lab visit to sign a consent form and receive training - A series of ~42 daily at-home sample (urine, saliva) collection & online surveys - Weekly lab visits for sample dropoff - The expected amount of time for participating in the study is 12 hours and 30 minutes in total (~5 to 6 weeks).

$212