Investigation of emotion regulation skills, salivary apelin, and serotonin levels in children in Türkiye: a cross-sectional study.

Older age and female gender explained most of emotion regulations skills.Key pointsIt was determined that the average salivary apelin and serotonin levels increased with increased age, and with increased age ERS also increased.More research is needed as this is the first time that the relationship between emotion regulation skills and serotonin and apelin levels has been examined.