According to a survey, most of the 2000 parents interviewed agreed that age eight is the most difficult to parent. And there’s a good reason for this! In 2013, BMC Pediatrics published the results of a study titled Study protocol: the Childhood to Adolescence Transition Study (CATS). The study determined that children between the ages of 6 to 8 receive an increase in Adrenal Androgens. In other words, the hormones eventually become responsible for puberty (a few years later).