Olfaction scaffolds the developing human from neonate to adolescent and beyond

Area of Science:

• Developmental Psychology
• Neuroscience
• Olfactory Communication

Background:

• The olfactory sense plays a vital role in early development, influencing infant-caregiver interactions.
• Chemical cues from amniotic fluid, milk, and maternal diet shape olfactory learning and dietary transitions.
• Familiar odors are recognized by infants and children, aiding in social bonding and emotional regulation.

Purpose of the Study:

• To explore the pervasive impact of the olfactory sense across human development, from infancy to adolescence.
• To highlight the role of olfactory continuity and maternal odors in developmental transitions.
• To examine how early olfactory learning influences social behaviors and preferences later in life.

Main Methods:

• Review of existing literature on olfactory development and its impact on behavior.
• Analysis of the role of chemical ecology in mother-offspring interactions.
• Exploration of olfactory influences on social recognition, emotional regulation, and mate choice.

Main Results:

• Olfactory continuity between amniotic fluid and milk facilitates nursing transitions.
• Maternal and familial odors are recognized and influence infant behavior, emotional regulation, and learning.
• Early olfactory experiences shape social preferences, including mate choice, and influence adolescent development.

Conclusions:

• Olfaction is fundamental in initiating, maintaining, and potentially disrupting adaptive reciprocity between offspring and carers during development.
• Early life olfactory experiences, particularly maternal odors, have lasting effects on social and emotional development.
• The chemical ecology of the family unit significantly influences individual development and social behaviors throughout adolescence.