an uncommon chromosomal disorder wherein a female has five X chromosomes instead of the typical couple. All impacted people analyzes had cognitive retardation, and some had ocular or other types of abnormalities.
Cite this page: N., Sam M.S., "XXXXX SYNDROME," in PsychologyDictionary.org, April 29, 2013, https://psychologydictionary.org/xxxxx-syndrome/ (accessed July 1, 2022).