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Olfactory conditioning facilitates diet transition in human infants

S Coyle1, H M Arnold, J S Goldberg-Arnold

  • 1Appetek, Inc., 5520 Lockridge Rd., Durham, NC 27705, USA.

Developmental Psychobiology
|October 25, 2000
PubMed

Insights

Pavlovian conditioning using scent cues significantly increased water intake in formula-fed infants. This olfactory conditioning method shows promise for aiding infant dietary transitions.

Area of Science:

  • Developmental Psychology
  • Behavioral Science
  • Infant Nutrition

Background:

  • Formula-fed infants often show neophobia towards non-preferred solutions like water.
  • Early feeding experiences shape long-term dietary acceptance.
  • Understanding infant learning mechanisms is crucial for nutritional interventions.

Purpose of the Study:

  • To investigate the efficacy of Pavlovian olfactory conditioning in increasing non-preferred fluid ingestion in human infants.
  • To determine if learned scent associations can enhance water consumption in 5-7 month old infants.

Main Methods:

  • A 3-day olfactory conditioning protocol involved associating a specific scent (conditioned stimulus) with formula feedings.
  • Infants' responses to water were assessed using bottles with the learned scent, a novel scent, or no scent.
  • Sucking frequency and fluid consumption were measured as primary outcomes.

Main Results:

  • Infants exhibited significantly higher sucking frequency and water consumption when the water bottle carried the learned scent compared to baseline.
  • Water intake with a novel scent or no scent remained at or below baseline levels.
  • The findings highlight the power of olfactory cues in modulating infant feeding behavior.

Conclusions:

  • Olfactory conditioning is an effective method for enhancing the ingestion of non-preferred solutions in formula-fed infants.
  • This technique may offer a valuable tool for facilitating dietary transitions and improving hydration in infants.
  • Learned associations through sensory cues can overcome initial neophobia in young children.

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