Journal
INFANT BEHAVIOR & DEVELOPMENT
Volume 64, Issue -, Pages -Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.infbeh.2021.101613
Keywords
Postpartum; Physical contact; Touch; Oxytocin; Fathers
Categories
Funding
- NSF CAREER [1552452]
- NSF [DGE-1418060]
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The study found that fathers' physical touch behaviors during parent-child interaction are associated with oxytocin levels, especially when fathers engage in more playful proprioceptive touch. Gentle affectionate touch and functional proprioceptive touch were found to predict higher levels of unextracted oxytocin. Fathers who did not engage in physical touch showed lower levels of both unextracted and extracted oxytocin.
Introduction: Physical connection, particularly parent-to-infant touch, is critical for the well-being of infants and may support the development of the parent-infant bond. Physical touch has also been found to stimulate oxytocin levels. This study tested whether fathers' micro-coded touch behaviors during parent-child interaction predicted their subsequent oxytocin levels. We also compared two widely-used methods of oxytocin immunoassay that have been found to yield discrepant results in past studies. Methods: Among 45 fathers and their six-month-old infants, we micro-coded paternal physical touch at 1/10 s intervals during a laboratory-based free-play interaction. Paternal oxytocin was measured via blood plasma and was processed both with and without the extraction step prior to immunoassay so that results from the two methods could be compared. Results: Unextracted and extracted oxytocin were moderately correlated within our sample. Fathers who engaged in more playful proprioceptive touch showed higher levels of both unextracted and extracted oxytocin. Gentle affectionate touch and functional proprioceptive touch predicted higher unextracted but not extracted oxytocin levels. Fathers who did not engage in physical touch showed lower levels of both unextracted and extracted oxytocin. Conclusion: Results are consistent with previous work showing that physical touch, particularly playful proprioceptive touch, is associated with higher oxytocin levels in fathers. These results replicate previous research using unextracted oxytocin measurement, and extend this work, showing that many but not all associations hold when using the more rigorous method of extraction when measuring oxytocin.
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