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Updated: Mar 30, 2026

Author Spotlight: Implications of Non-Nutritive Sucking on Speech Emergence and Infant Development
Published on: April 19, 2024
Pacifier Use, Finger Sucking, and Infant Sleep.
Rachel Butler1, Melisa Moore2, Jodi A Mindell1,2
1a Saint Joseph's University , Philadelphia , Pennsylvania.
Finger sucking in infants is linked to better nighttime sleep and fewer night wakings. Pacifier use, however, showed no significant impact on infant sleep patterns.
Area of Science:
- Pediatrics
- Sleep Medicine
- Developmental Psychology
Background:
- Limited research exists on the connection between nonnutritive sucking habits and infant sleep.
- Understanding these associations can inform parental decisions regarding pacifier use and digit sucking.
Purpose of the Study:
- To investigate the relationship between pacifier use, finger/thumb sucking, and sleep patterns in infants aged 0-11 months.
- To explore the impact of these habits on sleep duration, night wakings, and sleep ecology.
Main Methods:
- One hundred and four mothers completed the Brief Infant Sleep Questionnaire (BISQ) for their infants.
- Data collected included sleep patterns, night wakings, daytime sleep, and parental involvement during sleep.
Main Results:
- Infants who engaged in finger sucking experienced fewer night wakings and longer nighttime sleep durations, but shorter daytime sleep.
- No significant differences in sleep patterns were observed between pacifier users and non-users.
- Infant pacifier retrieval independence by 7 months did not correlate with sleep outcomes.
Conclusions:
- Pacifier use does not appear to be a critical factor influencing infant sleep.
- Finger and thumb sucking habits are associated with beneficial sleep outcomes in infants during their first year of life.
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