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melatonin

n. an amine hormone, produced mainly by the pineal gland as a metabolic product of the neurotransmitter serotonin, that helps to regulate seasonal changes in physiology and may also influence puberty. It is implicated in the initiation of sleep and in the regulation of the sleep–wake cycle. Melatonin has been investigated in clinical studies as a hypnotic and for the management of circadian rhythm sleep disorders. Although these studies are as yet inconclusive, melatonin is widely available as an over-the-counter medication.

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Psychology term of the day

January 19th 2025

novelty seeking

novelty seeking

1. a personality trait characterized by a strong interest in having new experiences; it is often associated with risk-taking behavior, and hence the term may be used synonymously with sensation seeking. It is also increasingly the preferred term for neophilia.

2. see Cloninger’s psychobiological model of personality; Temperament and Character Inventory.